./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/pthread/stack-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 523f30d87b393530166a10ee5951ac62008d62b5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:05:58,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:05:58,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:05:58,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:05:58,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:05:58,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:05:58,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:05:58,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:05:58,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:05:58,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:05:58,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:05:58,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:05:58,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:05:58,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:05:58,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:05:58,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:05:58,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:05:58,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:05:58,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:05:58,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:05:58,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:05:58,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:05:58,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:05:58,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:05:58,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:05:58,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:05:58,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:05:58,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:05:58,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:05:58,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:05:58,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:05:58,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:05:58,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:05:58,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:05:58,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:05:58,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:05:58,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:05:58,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:05:58,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:05:58,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:05:58,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:05:58,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:05:58,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:05:58,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:05:58,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:05:58,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:05:58,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:05:58,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:05:58,462 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:05:58,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:05:58,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:05:58,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:05:58,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:05:58,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:05:58,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:05:58,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:05:58,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:05:58,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:05:58,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:05:58,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:05:58,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:05:58,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:05:58,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:05:58,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:05:58,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:05:58,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:05:58,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:05:58,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:05:58,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:05:58,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:05:58,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:05:58,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:05:58,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 523f30d87b393530166a10ee5951ac62008d62b5 [2021-08-26 14:05:58,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:05:58,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:05:58,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:05:58,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:05:58,776 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:05:58,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2021-08-26 14:05:58,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/babb00f32/8371566d8e1541a7a054c099cbed9483/FLAG7950a1401 [2021-08-26 14:05:59,251 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:05:59,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2021-08-26 14:05:59,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/babb00f32/8371566d8e1541a7a054c099cbed9483/FLAG7950a1401 [2021-08-26 14:05:59,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/babb00f32/8371566d8e1541a7a054c099cbed9483 [2021-08-26 14:05:59,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:05:59,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:05:59,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:05:59,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:05:59,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:05:59,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6864ae0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59, skipping insertion in model container [2021-08-26 14:05:59,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:05:59,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:05:59,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-08-26 14:05:59,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:05:59,736 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:05:59,763 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-08-26 14:05:59,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:05:59,813 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:05:59,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59 WrapperNode [2021-08-26 14:05:59,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:05:59,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:05:59,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:05:59,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:05:59,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:05:59,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:05:59,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:05:59,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:05:59,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:05:59,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:05:59,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:05:59,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:05:59,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (1/1) ... [2021-08-26 14:05:59,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:05:59,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:05:59,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 14:05:59,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 14:05:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-26 14:05:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-26 14:05:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-26 14:05:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-26 14:05:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:05:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:05:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 14:05:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:05:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-26 14:05:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:05:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:05:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:05:59,989 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:06:00,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:06:00,370 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-26 14:06:00,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:06:00 BoogieIcfgContainer [2021-08-26 14:06:00,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:06:00,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:06:00,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:06:00,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:06:00,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:05:59" (1/3) ... [2021-08-26 14:06:00,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad4c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:06:00, skipping insertion in model container [2021-08-26 14:06:00,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:05:59" (2/3) ... [2021-08-26 14:06:00,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad4c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:06:00, skipping insertion in model container [2021-08-26 14:06:00,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:06:00" (3/3) ... [2021-08-26 14:06:00,376 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-08-26 14:06:00,379 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:06:00,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:06:00,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 14:06:00,380 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:06:00,419 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,419 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,419 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,419 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,420 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,420 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,420 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,420 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,420 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,421 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,421 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,421 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,421 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,423 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,423 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,423 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,425 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,426 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,426 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,427 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,427 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,428 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,428 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,428 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,428 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,429 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,431 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,431 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,431 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,431 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,432 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,433 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,433 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,434 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,434 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,435 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,435 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,435 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,436 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,436 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,439 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,439 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,441 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,441 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,442 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,443 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,446 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,450 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,451 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,452 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,453 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,454 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,454 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,454 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,454 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,456 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,456 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,456 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,456 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,456 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,457 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,458 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,458 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,458 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,459 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,460 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,465 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,465 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,465 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,466 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,467 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,467 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,468 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,468 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,468 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,468 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,471 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,476 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,478 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,478 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,478 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,478 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,478 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,479 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,479 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,479 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,483 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,484 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,485 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,487 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,487 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,487 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,487 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,490 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,490 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,490 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,491 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,491 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,492 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,492 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,492 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,492 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,493 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,494 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,494 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,494 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,498 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,498 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,499 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,500 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,501 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,501 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,501 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:06:00,509 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-26 14:06:00,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:06:00,543 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 14:06:00,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 14:06:00,553 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:06:00,571 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 152 transitions, 320 flow [2021-08-26 14:06:00,575 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 152 transitions, 320 flow [2021-08-26 14:06:00,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 152 transitions, 320 flow [2021-08-26 14:06:00,624 INFO L129 PetriNetUnfolder]: 10/150 cut-off events. [2021-08-26 14:06:00,624 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-26 14:06:00,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 150 events. 10/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 108. Up to 3 conditions per place. [2021-08-26 14:06:00,634 INFO L116 LiptonReduction]: Number of co-enabled transitions 6156 [2021-08-26 14:06:06,383 INFO L131 LiptonReduction]: Checked pairs total: 8550 [2021-08-26 14:06:06,384 INFO L133 LiptonReduction]: Total number of compositions: 142 [2021-08-26 14:06:06,389 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 88 flow [2021-08-26 14:06:06,404 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 14:06:06,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:06,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 14:06:06,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:06,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1203272477, now seen corresponding path program 1 times [2021-08-26 14:06:06,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:06,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866939193] [2021-08-26 14:06:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:06,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:06,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:06,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866939193] [2021-08-26 14:06:06,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866939193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:06,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:06,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:06:06,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483432590] [2021-08-26 14:06:06,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:06:06,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:06:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:06,619 INFO L87 Difference]: Start difference. First operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:06,671 INFO L93 Difference]: Finished difference Result 414 states and 1064 transitions. [2021-08-26 14:06:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:06:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-26 14:06:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:06,690 INFO L225 Difference]: With dead ends: 414 [2021-08-26 14:06:06,690 INFO L226 Difference]: Without dead ends: 396 [2021-08-26 14:06:06,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-08-26 14:06:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 372. [2021-08-26 14:06:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.6856368563685638) internal successors, (991), 371 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 991 transitions. [2021-08-26 14:06:06,736 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 991 transitions. Word has length 6 [2021-08-26 14:06:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:06,737 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 991 transitions. [2021-08-26 14:06:06,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 991 transitions. [2021-08-26 14:06:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 14:06:06,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:06,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:06,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:06:06,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1812969123, now seen corresponding path program 1 times [2021-08-26 14:06:06,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:06,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606778811] [2021-08-26 14:06:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:06,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:06,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:06,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606778811] [2021-08-26 14:06:06,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606778811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:06,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:06,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:06:06,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621721518] [2021-08-26 14:06:06,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:06:06,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:06:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:06,782 INFO L87 Difference]: Start difference. First operand 372 states and 991 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:06,790 INFO L93 Difference]: Finished difference Result 410 states and 1089 transitions. [2021-08-26 14:06:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:06:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 14:06:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:06,793 INFO L225 Difference]: With dead ends: 410 [2021-08-26 14:06:06,793 INFO L226 Difference]: Without dead ends: 410 [2021-08-26 14:06:06,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-08-26 14:06:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-08-26 14:06:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 407 states have (on average 2.675675675675676) internal successors, (1089), 409 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1089 transitions. [2021-08-26 14:06:06,810 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1089 transitions. Word has length 10 [2021-08-26 14:06:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:06,810 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1089 transitions. [2021-08-26 14:06:06,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1089 transitions. [2021-08-26 14:06:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 14:06:06,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:06,811 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:06,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:06:06,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash 951073680, now seen corresponding path program 1 times [2021-08-26 14:06:06,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:06,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623774671] [2021-08-26 14:06:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:06,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:06,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623774671] [2021-08-26 14:06:06,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623774671] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708226885] [2021-08-26 14:06:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:06,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:06,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:06,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 14:06:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:06,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 14:06:06,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708226885] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:07,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:07,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-08-26 14:06:07,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534325863] [2021-08-26 14:06:07,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 14:06:07,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 14:06:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:06:07,075 INFO L87 Difference]: Start difference. First operand 410 states and 1089 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:07,143 INFO L93 Difference]: Finished difference Result 730 states and 1874 transitions. [2021-08-26 14:06:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 14:06:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 14:06:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:07,147 INFO L225 Difference]: With dead ends: 730 [2021-08-26 14:06:07,147 INFO L226 Difference]: Without dead ends: 718 [2021-08-26 14:06:07,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:06:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-08-26 14:06:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 500. [2021-08-26 14:06:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.670020120724346) internal successors, (1327), 499 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1327 transitions. [2021-08-26 14:06:07,173 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1327 transitions. Word has length 13 [2021-08-26 14:06:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:07,173 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1327 transitions. [2021-08-26 14:06:07,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1327 transitions. [2021-08-26 14:06:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 14:06:07,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:07,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:07,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 14:06:07,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:07,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash 158671420, now seen corresponding path program 1 times [2021-08-26 14:06:07,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:07,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317666550] [2021-08-26 14:06:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:07,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:07,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:07,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317666550] [2021-08-26 14:06:07,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317666550] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:07,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:07,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:06:07,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662084530] [2021-08-26 14:06:07,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:06:07,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:06:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:07,443 INFO L87 Difference]: Start difference. First operand 500 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:07,454 INFO L93 Difference]: Finished difference Result 236 states and 530 transitions. [2021-08-26 14:06:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:06:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 14:06:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:07,455 INFO L225 Difference]: With dead ends: 236 [2021-08-26 14:06:07,455 INFO L226 Difference]: Without dead ends: 236 [2021-08-26 14:06:07,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-08-26 14:06:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2021-08-26 14:06:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 2.2455357142857144) internal successors, (503), 225 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 503 transitions. [2021-08-26 14:06:07,460 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 503 transitions. Word has length 16 [2021-08-26 14:06:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:07,460 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 503 transitions. [2021-08-26 14:06:07,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 503 transitions. [2021-08-26 14:06:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 14:06:07,461 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:07,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:07,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:06:07,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1994162131, now seen corresponding path program 1 times [2021-08-26 14:06:07,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:07,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939363336] [2021-08-26 14:06:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:07,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:07,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:07,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939363336] [2021-08-26 14:06:07,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939363336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:07,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:07,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:06:07,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317615801] [2021-08-26 14:06:07,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:06:07,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:06:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:07,492 INFO L87 Difference]: Start difference. First operand 226 states and 503 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:07,518 INFO L93 Difference]: Finished difference Result 284 states and 629 transitions. [2021-08-26 14:06:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:06:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 14:06:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:07,519 INFO L225 Difference]: With dead ends: 284 [2021-08-26 14:06:07,519 INFO L226 Difference]: Without dead ends: 284 [2021-08-26 14:06:07,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:06:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-26 14:06:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 228. [2021-08-26 14:06:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 226 states have (on average 2.256637168141593) internal successors, (510), 227 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 510 transitions. [2021-08-26 14:06:07,525 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 510 transitions. Word has length 17 [2021-08-26 14:06:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:07,525 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 510 transitions. [2021-08-26 14:06:07,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 510 transitions. [2021-08-26 14:06:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 14:06:07,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:07,526 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-08-26 14:06:07,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:06:07,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:07,527 INFO L82 PathProgramCache]: Analyzing trace with hash 531080125, now seen corresponding path program 2 times [2021-08-26 14:06:07,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:07,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378719864] [2021-08-26 14:06:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:07,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:07,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:07,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378719864] [2021-08-26 14:06:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378719864] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:07,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478463549] [2021-08-26 14:06:07,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:06:07,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:07,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:07,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 14:06:07,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:06:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:07,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 14:06:07,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:07,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478463549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:07,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:07,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-08-26 14:06:07,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379149989] [2021-08-26 14:06:07,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 14:06:07,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 14:06:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:06:07,805 INFO L87 Difference]: Start difference. First operand 228 states and 510 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:07,865 INFO L93 Difference]: Finished difference Result 412 states and 893 transitions. [2021-08-26 14:06:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 14:06:07,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 14:06:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:07,867 INFO L225 Difference]: With dead ends: 412 [2021-08-26 14:06:07,867 INFO L226 Difference]: Without dead ends: 412 [2021-08-26 14:06:07,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-26 14:06:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-08-26 14:06:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 284. [2021-08-26 14:06:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 2.2588652482269502) internal successors, (637), 283 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 637 transitions. [2021-08-26 14:06:07,874 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 637 transitions. Word has length 20 [2021-08-26 14:06:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:07,874 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 637 transitions. [2021-08-26 14:06:07,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 637 transitions. [2021-08-26 14:06:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 14:06:07,875 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:07,875 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:07,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:08,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-26 14:06:08,089 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1375844924, now seen corresponding path program 1 times [2021-08-26 14:06:08,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:08,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049924020] [2021-08-26 14:06:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:08,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:08,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:08,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049924020] [2021-08-26 14:06:08,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049924020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:08,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:08,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-26 14:06:08,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978063271] [2021-08-26 14:06:08,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 14:06:08,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 14:06:08,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-08-26 14:06:08,511 INFO L87 Difference]: Start difference. First operand 284 states and 637 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:09,251 INFO L93 Difference]: Finished difference Result 531 states and 1147 transitions. [2021-08-26 14:06:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-26 14:06:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 14:06:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:09,254 INFO L225 Difference]: With dead ends: 531 [2021-08-26 14:06:09,254 INFO L226 Difference]: Without dead ends: 474 [2021-08-26 14:06:09,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 544.8ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-08-26 14:06:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-08-26 14:06:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 346. [2021-08-26 14:06:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 344 states have (on average 2.2674418604651163) internal successors, (780), 345 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 780 transitions. [2021-08-26 14:06:09,262 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 780 transitions. Word has length 21 [2021-08-26 14:06:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:09,262 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 780 transitions. [2021-08-26 14:06:09,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 780 transitions. [2021-08-26 14:06:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 14:06:09,263 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:09,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:09,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 14:06:09,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:09,264 INFO L82 PathProgramCache]: Analyzing trace with hash 949323480, now seen corresponding path program 2 times [2021-08-26 14:06:09,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:09,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689396294] [2021-08-26 14:06:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:09,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:09,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:09,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689396294] [2021-08-26 14:06:09,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689396294] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:09,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:09,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-26 14:06:09,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132386632] [2021-08-26 14:06:09,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 14:06:09,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 14:06:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-08-26 14:06:09,692 INFO L87 Difference]: Start difference. First operand 346 states and 780 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:10,341 INFO L93 Difference]: Finished difference Result 557 states and 1214 transitions. [2021-08-26 14:06:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 14:06:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 14:06:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:10,344 INFO L225 Difference]: With dead ends: 557 [2021-08-26 14:06:10,344 INFO L226 Difference]: Without dead ends: 512 [2021-08-26 14:06:10,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 426.2ms TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-08-26 14:06:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-08-26 14:06:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 376. [2021-08-26 14:06:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 2.2566844919786098) internal successors, (844), 375 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 844 transitions. [2021-08-26 14:06:10,352 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 844 transitions. Word has length 21 [2021-08-26 14:06:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:10,352 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 844 transitions. [2021-08-26 14:06:10,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 844 transitions. [2021-08-26 14:06:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 14:06:10,353 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:10,353 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:10,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 14:06:10,354 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -715008454, now seen corresponding path program 3 times [2021-08-26 14:06:10,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:10,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361167331] [2021-08-26 14:06:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:10,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:10,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:10,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361167331] [2021-08-26 14:06:10,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361167331] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:06:10,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:06:10,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-26 14:06:10,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038433952] [2021-08-26 14:06:10,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 14:06:10,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 14:06:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-08-26 14:06:10,755 INFO L87 Difference]: Start difference. First operand 376 states and 844 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:11,572 INFO L93 Difference]: Finished difference Result 628 states and 1347 transitions. [2021-08-26 14:06:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 14:06:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 14:06:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:11,574 INFO L225 Difference]: With dead ends: 628 [2021-08-26 14:06:11,574 INFO L226 Difference]: Without dead ends: 570 [2021-08-26 14:06:11,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 588.2ms TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-08-26 14:06:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-08-26 14:06:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 334. [2021-08-26 14:06:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 332 states have (on average 2.253012048192771) internal successors, (748), 333 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 748 transitions. [2021-08-26 14:06:11,581 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 748 transitions. Word has length 21 [2021-08-26 14:06:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:11,581 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 748 transitions. [2021-08-26 14:06:11,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 748 transitions. [2021-08-26 14:06:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 14:06:11,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:11,582 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-08-26 14:06:11,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 14:06:11,582 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2120212752, now seen corresponding path program 3 times [2021-08-26 14:06:11,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:11,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230013216] [2021-08-26 14:06:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:11,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:11,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:11,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230013216] [2021-08-26 14:06:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230013216] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:11,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329378498] [2021-08-26 14:06:11,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:06:11,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:11,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:11,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:11,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 14:06:11,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 14:06:11,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:11,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 14:06:11,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:11,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329378498] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:11,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:11,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-08-26 14:06:11,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891059832] [2021-08-26 14:06:11,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 14:06:11,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 14:06:11,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-26 14:06:11,843 INFO L87 Difference]: Start difference. First operand 334 states and 748 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:11,924 INFO L93 Difference]: Finished difference Result 576 states and 1235 transitions. [2021-08-26 14:06:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 14:06:11,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-26 14:06:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:11,929 INFO L225 Difference]: With dead ends: 576 [2021-08-26 14:06:11,930 INFO L226 Difference]: Without dead ends: 576 [2021-08-26 14:06:11,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-26 14:06:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-08-26 14:06:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 390. [2021-08-26 14:06:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 2.2551546391752577) internal successors, (875), 389 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 875 transitions. [2021-08-26 14:06:11,939 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 875 transitions. Word has length 27 [2021-08-26 14:06:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:11,939 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 875 transitions. [2021-08-26 14:06:11,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 875 transitions. [2021-08-26 14:06:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 14:06:11,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:11,942 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:11,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:12,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:12,157 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1554514995, now seen corresponding path program 4 times [2021-08-26 14:06:12,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:12,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149144613] [2021-08-26 14:06:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:12,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:12,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:12,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149144613] [2021-08-26 14:06:12,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149144613] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:12,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909099429] [2021-08-26 14:06:12,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:06:12,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:12,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:12,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 14:06:12,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:06:12,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:12,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjunts are in the unsatisfiable core [2021-08-26 14:06:12,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:12,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-08-26 14:06:13,040 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:06:13,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:06:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:13,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909099429] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:13,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:13,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-08-26 14:06:13,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987533068] [2021-08-26 14:06:13,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 14:06:13,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 14:06:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-08-26 14:06:13,119 INFO L87 Difference]: Start difference. First operand 390 states and 875 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:13,931 INFO L93 Difference]: Finished difference Result 643 states and 1395 transitions. [2021-08-26 14:06:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 14:06:13,932 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 14:06:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:13,934 INFO L225 Difference]: With dead ends: 643 [2021-08-26 14:06:13,934 INFO L226 Difference]: Without dead ends: 643 [2021-08-26 14:06:13,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 522.4ms TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2021-08-26 14:06:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-08-26 14:06:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 503. [2021-08-26 14:06:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 501 states have (on average 2.279441117764471) internal successors, (1142), 502 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1142 transitions. [2021-08-26 14:06:13,943 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1142 transitions. Word has length 28 [2021-08-26 14:06:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:13,943 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 1142 transitions. [2021-08-26 14:06:13,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1142 transitions. [2021-08-26 14:06:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 14:06:13,949 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:13,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:13,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:14,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:14,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 363622917, now seen corresponding path program 5 times [2021-08-26 14:06:14,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:14,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282238654] [2021-08-26 14:06:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:14,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:14,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:14,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282238654] [2021-08-26 14:06:14,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282238654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:14,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510532572] [2021-08-26 14:06:14,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:06:14,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:14,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:14,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:14,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 14:06:14,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:06:14,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:14,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 57 conjunts are in the unsatisfiable core [2021-08-26 14:06:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:14,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-08-26 14:06:15,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:06:15,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-08-26 14:06:15,231 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:06:15,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:06:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:15,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510532572] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:15,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:15,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 19 [2021-08-26 14:06:15,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803281345] [2021-08-26 14:06:15,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 14:06:15,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 14:06:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-08-26 14:06:15,303 INFO L87 Difference]: Start difference. First operand 503 states and 1142 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:16,097 INFO L93 Difference]: Finished difference Result 736 states and 1608 transitions. [2021-08-26 14:06:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 14:06:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 14:06:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:16,100 INFO L225 Difference]: With dead ends: 736 [2021-08-26 14:06:16,101 INFO L226 Difference]: Without dead ends: 736 [2021-08-26 14:06:16,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 512.7ms TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2021-08-26 14:06:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-08-26 14:06:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 533. [2021-08-26 14:06:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 2.310734463276836) internal successors, (1227), 532 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1227 transitions. [2021-08-26 14:06:16,113 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1227 transitions. Word has length 28 [2021-08-26 14:06:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:16,114 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 1227 transitions. [2021-08-26 14:06:16,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1227 transitions. [2021-08-26 14:06:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 14:06:16,115 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:16,115 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:16,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:16,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 14:06:16,321 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:16,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1300709017, now seen corresponding path program 6 times [2021-08-26 14:06:16,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:16,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707717543] [2021-08-26 14:06:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:16,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:16,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:16,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707717543] [2021-08-26 14:06:16,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707717543] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:16,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757392735] [2021-08-26 14:06:16,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 14:06:16,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:16,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:16,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 14:06:17,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-08-26 14:06:17,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:17,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-26 14:06:17,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:17,060 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:06:17,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3398 treesize of output 3134 [2021-08-26 14:06:17,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:06:17,587 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:06:17,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-08-26 14:06:17,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-08-26 14:06:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 14:06:17,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757392735] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:17,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:17,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-08-26 14:06:17,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303629923] [2021-08-26 14:06:17,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-26 14:06:17,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-26 14:06:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2021-08-26 14:06:17,970 INFO L87 Difference]: Start difference. First operand 533 states and 1227 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:22,441 INFO L93 Difference]: Finished difference Result 989 states and 2143 transitions. [2021-08-26 14:06:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-26 14:06:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 14:06:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:22,445 INFO L225 Difference]: With dead ends: 989 [2021-08-26 14:06:22,445 INFO L226 Difference]: Without dead ends: 989 [2021-08-26 14:06:22,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 3711.4ms TimeCoverageRelationStatistics Valid=613, Invalid=4499, Unknown=0, NotChecked=0, Total=5112 [2021-08-26 14:06:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-08-26 14:06:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 510. [2021-08-26 14:06:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 2.3169291338582676) internal successors, (1177), 509 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1177 transitions. [2021-08-26 14:06:22,458 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1177 transitions. Word has length 28 [2021-08-26 14:06:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:22,458 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1177 transitions. [2021-08-26 14:06:22,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1177 transitions. [2021-08-26 14:06:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-26 14:06:22,459 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:22,459 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-08-26 14:06:22,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:22,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:22,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1527985245, now seen corresponding path program 4 times [2021-08-26 14:06:22,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:22,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112836970] [2021-08-26 14:06:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:22,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:22,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:22,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112836970] [2021-08-26 14:06:22,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112836970] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:22,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951347664] [2021-08-26 14:06:22,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:06:22,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:22,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:22,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 14:06:23,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:06:23,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:23,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 14:06:23,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:23,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951347664] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:23,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:23,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-26 14:06:23,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869549004] [2021-08-26 14:06:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 14:06:23,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 14:06:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-26 14:06:23,103 INFO L87 Difference]: Start difference. First operand 510 states and 1177 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:23,181 INFO L93 Difference]: Finished difference Result 778 states and 1712 transitions. [2021-08-26 14:06:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 14:06:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-26 14:06:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:23,191 INFO L225 Difference]: With dead ends: 778 [2021-08-26 14:06:23,191 INFO L226 Difference]: Without dead ends: 778 [2021-08-26 14:06:23,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-08-26 14:06:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-08-26 14:06:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 566. [2021-08-26 14:06:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 564 states have (on average 2.3120567375886525) internal successors, (1304), 565 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1304 transitions. [2021-08-26 14:06:23,202 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1304 transitions. Word has length 34 [2021-08-26 14:06:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:23,203 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1304 transitions. [2021-08-26 14:06:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1304 transitions. [2021-08-26 14:06:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 14:06:23,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:23,204 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:23,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:23,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:23,417 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 142621127, now seen corresponding path program 1 times [2021-08-26 14:06:23,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:23,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039897643] [2021-08-26 14:06:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:23,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:23,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:23,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039897643] [2021-08-26 14:06:23,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039897643] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:23,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831140113] [2021-08-26 14:06:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:23,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:23,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:23,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:23,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 14:06:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:24,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 62 conjunts are in the unsatisfiable core [2021-08-26 14:06:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:24,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:06:24,575 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:06:24,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:06:25,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-08-26 14:06:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:25,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831140113] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:25,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:25,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2021-08-26 14:06:25,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085315700] [2021-08-26 14:06:25,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-26 14:06:25,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:25,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-26 14:06:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-08-26 14:06:25,205 INFO L87 Difference]: Start difference. First operand 566 states and 1304 transitions. Second operand has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:34,730 INFO L93 Difference]: Finished difference Result 2097 states and 4606 transitions. [2021-08-26 14:06:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-08-26 14:06:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 14:06:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:34,736 INFO L225 Difference]: With dead ends: 2097 [2021-08-26 14:06:34,736 INFO L226 Difference]: Without dead ends: 1988 [2021-08-26 14:06:34,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 7848.1ms TimeCoverageRelationStatistics Valid=1125, Invalid=9381, Unknown=0, NotChecked=0, Total=10506 [2021-08-26 14:06:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2021-08-26 14:06:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1057. [2021-08-26 14:06:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1055 states have (on average 2.41042654028436) internal successors, (2543), 1056 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2543 transitions. [2021-08-26 14:06:34,758 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2543 transitions. Word has length 36 [2021-08-26 14:06:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:34,758 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2543 transitions. [2021-08-26 14:06:34,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2543 transitions. [2021-08-26 14:06:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 14:06:34,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:34,760 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:34,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:34,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-26 14:06:34,974 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash 884789901, now seen corresponding path program 2 times [2021-08-26 14:06:34,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:34,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339524594] [2021-08-26 14:06:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:34,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:35,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:35,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339524594] [2021-08-26 14:06:35,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339524594] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:35,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841802708] [2021-08-26 14:06:35,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:06:35,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:35,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:35,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:35,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 14:06:35,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:06:35,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:35,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 77 conjunts are in the unsatisfiable core [2021-08-26 14:06:35,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:35,863 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:06:35,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 825 treesize of output 819 [2021-08-26 14:06:36,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:06:36,232 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-26 14:06:36,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 42 [2021-08-26 14:06:36,636 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:06:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-26 14:06:37,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:06:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:37,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841802708] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:37,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:37,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 34 [2021-08-26 14:06:37,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506179040] [2021-08-26 14:06:37,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-26 14:06:37,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-26 14:06:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2021-08-26 14:06:37,145 INFO L87 Difference]: Start difference. First operand 1057 states and 2543 transitions. Second operand has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:38,930 INFO L93 Difference]: Finished difference Result 1459 states and 3357 transitions. [2021-08-26 14:06:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 14:06:38,931 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 14:06:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:38,935 INFO L225 Difference]: With dead ends: 1459 [2021-08-26 14:06:38,935 INFO L226 Difference]: Without dead ends: 1382 [2021-08-26 14:06:38,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1646.8ms TimeCoverageRelationStatistics Valid=378, Invalid=2814, Unknown=0, NotChecked=0, Total=3192 [2021-08-26 14:06:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-08-26 14:06:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1148. [2021-08-26 14:06:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1146 states have (on average 2.397905759162304) internal successors, (2748), 1147 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 2748 transitions. [2021-08-26 14:06:38,953 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 2748 transitions. Word has length 36 [2021-08-26 14:06:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:38,953 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 2748 transitions. [2021-08-26 14:06:38,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 2748 transitions. [2021-08-26 14:06:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 14:06:38,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:38,955 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:38,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:39,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 14:06:39,173 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1136628459, now seen corresponding path program 3 times [2021-08-26 14:06:39,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:39,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278182140] [2021-08-26 14:06:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:39,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:39,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:39,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278182140] [2021-08-26 14:06:39,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278182140] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:39,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098262207] [2021-08-26 14:06:39,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:06:39,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:39,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:39,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:39,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 14:06:40,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 14:06:40,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:40,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 77 conjunts are in the unsatisfiable core [2021-08-26 14:06:40,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:40,066 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:06:40,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3238 treesize of output 3140 [2021-08-26 14:06:40,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:06:40,695 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:06:40,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:06:40,891 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:06:40,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:06:41,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:06:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:41,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098262207] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:41,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 26 [2021-08-26 14:06:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079086857] [2021-08-26 14:06:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-26 14:06:41,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-26 14:06:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-08-26 14:06:41,419 INFO L87 Difference]: Start difference. First operand 1148 states and 2748 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:06:43,380 INFO L93 Difference]: Finished difference Result 1795 states and 4056 transitions. [2021-08-26 14:06:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-26 14:06:43,381 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 14:06:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:06:43,386 INFO L225 Difference]: With dead ends: 1795 [2021-08-26 14:06:43,386 INFO L226 Difference]: Without dead ends: 1654 [2021-08-26 14:06:43,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1653.8ms TimeCoverageRelationStatistics Valid=439, Invalid=2867, Unknown=0, NotChecked=0, Total=3306 [2021-08-26 14:06:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-08-26 14:06:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1135. [2021-08-26 14:06:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 2.383053839364519) internal successors, (2700), 1134 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2700 transitions. [2021-08-26 14:06:43,404 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2700 transitions. Word has length 36 [2021-08-26 14:06:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:06:43,404 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2700 transitions. [2021-08-26 14:06:43,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:06:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2700 transitions. [2021-08-26 14:06:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 14:06:43,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:06:43,406 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:06:43,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 14:06:43,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 14:06:43,621 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:06:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:06:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash -768162463, now seen corresponding path program 4 times [2021-08-26 14:06:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:06:43,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199683400] [2021-08-26 14:06:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:06:43,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:06:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:06:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:44,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:06:44,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199683400] [2021-08-26 14:06:44,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199683400] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:44,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685880762] [2021-08-26 14:06:44,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:06:44,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:06:44,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:06:44,279 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:06:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 14:06:44,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:06:44,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:06:44,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 68 conjunts are in the unsatisfiable core [2021-08-26 14:06:44,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:06:44,751 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:06:44,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 997 treesize of output 985 [2021-08-26 14:06:45,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:06:45,394 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:06:45,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:06:45,531 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:06:45,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-08-26 14:06:45,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-08-26 14:06:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:06:46,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685880762] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:06:46,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:06:46,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 43 [2021-08-26 14:06:46,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965937754] [2021-08-26 14:06:46,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-08-26 14:06:46,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:06:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-08-26 14:06:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1817, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 14:06:46,099 INFO L87 Difference]: Start difference. First operand 1135 states and 2700 transitions. Second operand has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:04,083 INFO L93 Difference]: Finished difference Result 2799 states and 6124 transitions. [2021-08-26 14:07:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-08-26 14:07:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 14:07:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:04,091 INFO L225 Difference]: With dead ends: 2799 [2021-08-26 14:07:04,092 INFO L226 Difference]: Without dead ends: 2593 [2021-08-26 14:07:04,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7040 ImplicationChecksByTransitivity, 16153.2ms TimeCoverageRelationStatistics Valid=2652, Invalid=20300, Unknown=0, NotChecked=0, Total=22952 [2021-08-26 14:07:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-08-26 14:07:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 943. [2021-08-26 14:07:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 941 states have (on average 2.290116896918172) internal successors, (2155), 942 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2155 transitions. [2021-08-26 14:07:04,116 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2155 transitions. Word has length 36 [2021-08-26 14:07:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:04,116 INFO L470 AbstractCegarLoop]: Abstraction has 943 states and 2155 transitions. [2021-08-26 14:07:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2155 transitions. [2021-08-26 14:07:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 14:07:04,117 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:04,118 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:04,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-26 14:07:04,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 14:07:04,330 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash 688948273, now seen corresponding path program 1 times [2021-08-26 14:07:04,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:04,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344424405] [2021-08-26 14:07:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:04,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 14:07:04,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:04,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344424405] [2021-08-26 14:07:04,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344424405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:04,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001154441] [2021-08-26 14:07:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:04,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:04,397 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) [2021-08-26 14:07:04,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 14:07:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:04,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 14:07:04,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 14:07:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001154441] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:05,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:05,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-08-26 14:07:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168202204] [2021-08-26 14:07:05,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 14:07:05,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 14:07:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-26 14:07:05,045 INFO L87 Difference]: Start difference. First operand 943 states and 2155 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:05,135 INFO L93 Difference]: Finished difference Result 1637 states and 3559 transitions. [2021-08-26 14:07:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 14:07:05,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-26 14:07:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:05,140 INFO L225 Difference]: With dead ends: 1637 [2021-08-26 14:07:05,140 INFO L226 Difference]: Without dead ends: 1637 [2021-08-26 14:07:05,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-08-26 14:07:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-08-26 14:07:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1017. [2021-08-26 14:07:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1015 states have (on average 2.329064039408867) internal successors, (2364), 1016 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2364 transitions. [2021-08-26 14:07:05,158 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2364 transitions. Word has length 38 [2021-08-26 14:07:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:05,158 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2364 transitions. [2021-08-26 14:07:05,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2364 transitions. [2021-08-26 14:07:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 14:07:05,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:05,161 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-08-26 14:07:05,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:05,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:05,381 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:05,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1036950096, now seen corresponding path program 5 times [2021-08-26 14:07:05,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:05,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358887106] [2021-08-26 14:07:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:05,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:05,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:05,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358887106] [2021-08-26 14:07:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358887106] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:05,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326234123] [2021-08-26 14:07:05,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:07:05,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:05,439 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) [2021-08-26 14:07:05,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 14:07:05,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-26 14:07:05,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:05,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 14:07:05,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:06,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326234123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:07:06,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 14:07:06,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-08-26 14:07:06,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324761479] [2021-08-26 14:07:06,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 14:07:06,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 14:07:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:07:06,037 INFO L87 Difference]: Start difference. First operand 1017 states and 2364 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:06,063 INFO L93 Difference]: Finished difference Result 2427 states and 5423 transitions. [2021-08-26 14:07:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 14:07:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-26 14:07:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:06,067 INFO L225 Difference]: With dead ends: 2427 [2021-08-26 14:07:06,067 INFO L226 Difference]: Without dead ends: 1507 [2021-08-26 14:07:06,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:07:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-08-26 14:07:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1071. [2021-08-26 14:07:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1069 states have (on average 2.0626753975678205) internal successors, (2205), 1070 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2205 transitions. [2021-08-26 14:07:06,083 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2205 transitions. Word has length 41 [2021-08-26 14:07:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:06,084 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2205 transitions. [2021-08-26 14:07:06,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2205 transitions. [2021-08-26 14:07:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 14:07:06,085 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:06,085 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:06,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:06,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-08-26 14:07:06,302 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash 803083900, now seen corresponding path program 2 times [2021-08-26 14:07:06,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:06,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825568764] [2021-08-26 14:07:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:06,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 14:07:06,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:06,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825568764] [2021-08-26 14:07:06,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825568764] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:06,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385716157] [2021-08-26 14:07:06,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:07:06,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:06,399 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) [2021-08-26 14:07:06,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 14:07:06,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:07:06,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 14:07:06,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 14:07:07,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385716157] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:07,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:07,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 12 [2021-08-26 14:07:07,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791714845] [2021-08-26 14:07:07,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 14:07:07,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 14:07:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-26 14:07:07,008 INFO L87 Difference]: Start difference. First operand 1071 states and 2205 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:07,123 INFO L93 Difference]: Finished difference Result 1609 states and 3242 transitions. [2021-08-26 14:07:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 14:07:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 14:07:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:07,127 INFO L225 Difference]: With dead ends: 1609 [2021-08-26 14:07:07,127 INFO L226 Difference]: Without dead ends: 1371 [2021-08-26 14:07:07,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-08-26 14:07:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-08-26 14:07:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1063. [2021-08-26 14:07:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1061 states have (on average 2.0254476908576815) internal successors, (2149), 1062 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2149 transitions. [2021-08-26 14:07:07,142 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2149 transitions. Word has length 45 [2021-08-26 14:07:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2149 transitions. [2021-08-26 14:07:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2149 transitions. [2021-08-26 14:07:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 14:07:07,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:07,145 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:07,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:07,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:07,357 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -870986040, now seen corresponding path program 3 times [2021-08-26 14:07:07,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:07,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420625325] [2021-08-26 14:07:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:07,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 14:07:07,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:07,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420625325] [2021-08-26 14:07:07,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420625325] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:07,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952764589] [2021-08-26 14:07:07,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:07:07,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:07,430 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:07,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 14:07:07,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-26 14:07:07,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:07,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 14:07:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 14:07:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952764589] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:08,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:08,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-08-26 14:07:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188619546] [2021-08-26 14:07:08,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 14:07:08,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 14:07:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-26 14:07:08,068 INFO L87 Difference]: Start difference. First operand 1063 states and 2149 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:08,166 INFO L93 Difference]: Finished difference Result 1545 states and 3053 transitions. [2021-08-26 14:07:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 14:07:08,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 14:07:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:08,170 INFO L225 Difference]: With dead ends: 1545 [2021-08-26 14:07:08,170 INFO L226 Difference]: Without dead ends: 1513 [2021-08-26 14:07:08,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-08-26 14:07:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-08-26 14:07:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 987. [2021-08-26 14:07:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.984771573604061) internal successors, (1955), 986 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1955 transitions. [2021-08-26 14:07:08,186 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1955 transitions. Word has length 45 [2021-08-26 14:07:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:08,186 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1955 transitions. [2021-08-26 14:07:08,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1955 transitions. [2021-08-26 14:07:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 14:07:08,187 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:08,187 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:08,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:08,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:08,388 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash 280658248, now seen corresponding path program 4 times [2021-08-26 14:07:08,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:08,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093527892] [2021-08-26 14:07:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:08,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 14:07:08,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:08,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093527892] [2021-08-26 14:07:08,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093527892] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:08,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533526035] [2021-08-26 14:07:08,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:07:08,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:08,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:08,485 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:08,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 14:07:09,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:07:09,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:09,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 14:07:09,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 14:07:09,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533526035] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:09,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:09,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-26 14:07:09,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062357090] [2021-08-26 14:07:09,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 14:07:09,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 14:07:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-26 14:07:09,162 INFO L87 Difference]: Start difference. First operand 987 states and 1955 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:09,274 INFO L93 Difference]: Finished difference Result 1629 states and 3152 transitions. [2021-08-26 14:07:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 14:07:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 14:07:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:09,278 INFO L225 Difference]: With dead ends: 1629 [2021-08-26 14:07:09,279 INFO L226 Difference]: Without dead ends: 1625 [2021-08-26 14:07:09,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-08-26 14:07:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-08-26 14:07:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 987. [2021-08-26 14:07:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.984771573604061) internal successors, (1955), 986 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1955 transitions. [2021-08-26 14:07:09,294 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1955 transitions. Word has length 45 [2021-08-26 14:07:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:09,294 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1955 transitions. [2021-08-26 14:07:09,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1955 transitions. [2021-08-26 14:07:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 14:07:09,296 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:09,296 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:09,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:09,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-26 14:07:09,497 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash -317231720, now seen corresponding path program 5 times [2021-08-26 14:07:09,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:09,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194278929] [2021-08-26 14:07:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:09,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:10,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:10,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194278929] [2021-08-26 14:07:10,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194278929] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:10,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555331883] [2021-08-26 14:07:10,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:07:10,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:10,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:10,174 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:10,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 14:07:10,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-26 14:07:10,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:10,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 93 conjunts are in the unsatisfiable core [2021-08-26 14:07:10,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:10,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:10,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:10,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:11,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:11,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:07:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:11,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555331883] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:11,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:11,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 31 [2021-08-26 14:07:11,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187207982] [2021-08-26 14:07:11,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-26 14:07:11,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-26 14:07:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 14:07:11,584 INFO L87 Difference]: Start difference. First operand 987 states and 1955 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:14,470 INFO L93 Difference]: Finished difference Result 1775 states and 3524 transitions. [2021-08-26 14:07:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-26 14:07:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 14:07:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:14,472 INFO L225 Difference]: With dead ends: 1775 [2021-08-26 14:07:14,472 INFO L226 Difference]: Without dead ends: 1256 [2021-08-26 14:07:14,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 2302.6ms TimeCoverageRelationStatistics Valid=771, Invalid=4779, Unknown=0, NotChecked=0, Total=5550 [2021-08-26 14:07:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-08-26 14:07:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1086. [2021-08-26 14:07:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1084 states have (on average 1.9640221402214022) internal successors, (2129), 1085 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2129 transitions. [2021-08-26 14:07:14,486 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2129 transitions. Word has length 51 [2021-08-26 14:07:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:14,486 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2129 transitions. [2021-08-26 14:07:14,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2129 transitions. [2021-08-26 14:07:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 14:07:14,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:14,488 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:14,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:14,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:14,702 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1407807506, now seen corresponding path program 6 times [2021-08-26 14:07:14,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:14,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230109656] [2021-08-26 14:07:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:14,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:15,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:15,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230109656] [2021-08-26 14:07:15,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230109656] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:15,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374424124] [2021-08-26 14:07:15,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 14:07:15,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:15,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:15,479 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 14:07:16,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-26 14:07:16,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:16,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 14:07:16,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:16,209 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:07:16,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 682 treesize of output 662 [2021-08-26 14:07:16,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:16,465 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:16,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:07:16,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:16,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:16,857 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:16,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:17,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:07:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:17,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374424124] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:17,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:17,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 36 [2021-08-26 14:07:17,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407497311] [2021-08-26 14:07:17,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-26 14:07:17,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-26 14:07:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2021-08-26 14:07:17,439 INFO L87 Difference]: Start difference. First operand 1086 states and 2129 transitions. Second operand has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:19,526 INFO L93 Difference]: Finished difference Result 1951 states and 3835 transitions. [2021-08-26 14:07:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-26 14:07:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 14:07:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:19,529 INFO L225 Difference]: With dead ends: 1951 [2021-08-26 14:07:19,529 INFO L226 Difference]: Without dead ends: 1600 [2021-08-26 14:07:19,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 1734.8ms TimeCoverageRelationStatistics Valid=442, Invalid=3590, Unknown=0, NotChecked=0, Total=4032 [2021-08-26 14:07:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-08-26 14:07:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1318. [2021-08-26 14:07:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1316 states have (on average 1.9202127659574468) internal successors, (2527), 1317 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2527 transitions. [2021-08-26 14:07:19,547 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2527 transitions. Word has length 51 [2021-08-26 14:07:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:19,547 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 2527 transitions. [2021-08-26 14:07:19,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2527 transitions. [2021-08-26 14:07:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 14:07:19,550 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:19,550 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:19,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:19,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:19,761 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1520314356, now seen corresponding path program 7 times [2021-08-26 14:07:19,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:19,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158265172] [2021-08-26 14:07:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:19,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:20,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:20,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158265172] [2021-08-26 14:07:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158265172] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:20,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48139059] [2021-08-26 14:07:20,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 14:07:20,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:20,488 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:20,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 14:07:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:21,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 106 conjunts are in the unsatisfiable core [2021-08-26 14:07:21,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:21,242 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:07:21,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 184 [2021-08-26 14:07:21,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:21,582 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:21,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:07:21,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:21,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:21,917 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:21,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:22,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:07:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48139059] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:22,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 37 [2021-08-26 14:07:22,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494149195] [2021-08-26 14:07:22,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 14:07:22,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 14:07:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 14:07:22,530 INFO L87 Difference]: Start difference. First operand 1318 states and 2527 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:25,575 INFO L93 Difference]: Finished difference Result 2072 states and 3979 transitions. [2021-08-26 14:07:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-26 14:07:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 14:07:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:25,578 INFO L225 Difference]: With dead ends: 2072 [2021-08-26 14:07:25,578 INFO L226 Difference]: Without dead ends: 1809 [2021-08-26 14:07:25,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 2615.1ms TimeCoverageRelationStatistics Valid=735, Invalid=5907, Unknown=0, NotChecked=0, Total=6642 [2021-08-26 14:07:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-08-26 14:07:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1379. [2021-08-26 14:07:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1377 states have (on average 1.9208424110384894) internal successors, (2645), 1378 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2645 transitions. [2021-08-26 14:07:25,596 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2645 transitions. Word has length 51 [2021-08-26 14:07:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 2645 transitions. [2021-08-26 14:07:25,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2645 transitions. [2021-08-26 14:07:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 14:07:25,599 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:25,599 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:25,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:25,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:25,808 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:25,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1812159208, now seen corresponding path program 8 times [2021-08-26 14:07:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:25,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88099382] [2021-08-26 14:07:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:25,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:26,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:26,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88099382] [2021-08-26 14:07:26,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88099382] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:26,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417823373] [2021-08-26 14:07:26,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:07:26,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:26,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:26,566 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:26,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 14:07:27,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:07:27,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:27,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 14:07:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:27,372 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:07:27,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4509 treesize of output 4235 [2021-08-26 14:07:27,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:27,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:27,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:28,062 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:28,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:07:28,258 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:28,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:28,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:07:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:28,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417823373] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:28,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:28,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24] total 37 [2021-08-26 14:07:28,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668112376] [2021-08-26 14:07:28,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 14:07:28,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 14:07:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 14:07:28,929 INFO L87 Difference]: Start difference. First operand 1379 states and 2645 transitions. Second operand has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:31,677 INFO L93 Difference]: Finished difference Result 2152 states and 4139 transitions. [2021-08-26 14:07:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-26 14:07:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 14:07:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:31,680 INFO L225 Difference]: With dead ends: 2152 [2021-08-26 14:07:31,680 INFO L226 Difference]: Without dead ends: 1515 [2021-08-26 14:07:31,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2344.4ms TimeCoverageRelationStatistics Valid=628, Invalid=5072, Unknown=0, NotChecked=0, Total=5700 [2021-08-26 14:07:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-08-26 14:07:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1088. [2021-08-26 14:07:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.9181232750689972) internal successors, (2085), 1087 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 2085 transitions. [2021-08-26 14:07:31,697 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 2085 transitions. Word has length 51 [2021-08-26 14:07:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:31,697 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 2085 transitions. [2021-08-26 14:07:31,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 2085 transitions. [2021-08-26 14:07:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 14:07:31,699 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:31,699 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:31,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:31,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 14:07:31,905 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1890386318, now seen corresponding path program 9 times [2021-08-26 14:07:31,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:31,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861583720] [2021-08-26 14:07:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:31,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:32,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:32,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861583720] [2021-08-26 14:07:32,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861583720] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:32,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109508765] [2021-08-26 14:07:32,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:07:32,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:32,893 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:32,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 14:07:33,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 14:07:33,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:33,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 92 conjunts are in the unsatisfiable core [2021-08-26 14:07:33,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:33,810 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:07:33,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 339 treesize of output 325 [2021-08-26 14:07:34,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:07:34,570 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:34,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-26 14:07:34,918 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:34,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-26 14:07:35,070 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:35,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-08-26 14:07:35,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:07:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109508765] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:35,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:35,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26] total 53 [2021-08-26 14:07:35,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29923852] [2021-08-26 14:07:35,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-08-26 14:07:35,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-08-26 14:07:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2021-08-26 14:07:35,873 INFO L87 Difference]: Start difference. First operand 1088 states and 2085 transitions. Second operand has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:42,125 INFO L93 Difference]: Finished difference Result 1774 states and 3408 transitions. [2021-08-26 14:07:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-26 14:07:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 14:07:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:42,128 INFO L225 Difference]: With dead ends: 1774 [2021-08-26 14:07:42,128 INFO L226 Difference]: Without dead ends: 922 [2021-08-26 14:07:42,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4109 ImplicationChecksByTransitivity, 5704.8ms TimeCoverageRelationStatistics Valid=1587, Invalid=12693, Unknown=0, NotChecked=0, Total=14280 [2021-08-26 14:07:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-08-26 14:07:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 534. [2021-08-26 14:07:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.9924953095684803) internal successors, (1062), 533 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1062 transitions. [2021-08-26 14:07:42,135 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1062 transitions. Word has length 51 [2021-08-26 14:07:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:42,135 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1062 transitions. [2021-08-26 14:07:42,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1062 transitions. [2021-08-26 14:07:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 14:07:42,136 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:42,137 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:42,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:42,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 14:07:42,356 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:42,356 INFO L82 PathProgramCache]: Analyzing trace with hash -79843871, now seen corresponding path program 10 times [2021-08-26 14:07:42,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:42,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812687966] [2021-08-26 14:07:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:42,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:43,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:43,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812687966] [2021-08-26 14:07:43,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812687966] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:43,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731130357] [2021-08-26 14:07:43,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:07:43,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:43,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:43,064 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 14:07:44,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:07:44,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:44,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 94 conjunts are in the unsatisfiable core [2021-08-26 14:07:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:44,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:44,384 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:44,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:44,587 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:44,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:45,008 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:07:45,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:07:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731130357] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:45,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:45,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 33 [2021-08-26 14:07:45,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566049371] [2021-08-26 14:07:45,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-26 14:07:45,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-26 14:07:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 14:07:45,067 INFO L87 Difference]: Start difference. First operand 534 states and 1062 transitions. Second operand has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:47,653 INFO L93 Difference]: Finished difference Result 1109 states and 2200 transitions. [2021-08-26 14:07:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-26 14:07:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 14:07:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:47,655 INFO L225 Difference]: With dead ends: 1109 [2021-08-26 14:07:47,655 INFO L226 Difference]: Without dead ends: 1109 [2021-08-26 14:07:47,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1612.3ms TimeCoverageRelationStatistics Valid=320, Invalid=3586, Unknown=0, NotChecked=0, Total=3906 [2021-08-26 14:07:47,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-08-26 14:07:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 763. [2021-08-26 14:07:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.973753280839895) internal successors, (1504), 762 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1504 transitions. [2021-08-26 14:07:47,688 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1504 transitions. Word has length 58 [2021-08-26 14:07:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:47,688 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1504 transitions. [2021-08-26 14:07:47,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1504 transitions. [2021-08-26 14:07:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 14:07:47,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:47,690 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:47,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:47,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 14:07:47,890 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:47,891 INFO L82 PathProgramCache]: Analyzing trace with hash 54414975, now seen corresponding path program 11 times [2021-08-26 14:07:47,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:47,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361693530] [2021-08-26 14:07:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:47,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:48,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:48,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361693530] [2021-08-26 14:07:48,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361693530] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:48,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479540464] [2021-08-26 14:07:48,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:07:48,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:48,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:48,702 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:48,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 14:07:49,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 14:07:49,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:49,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 103 conjunts are in the unsatisfiable core [2021-08-26 14:07:49,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:49,827 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:07:49,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 581 treesize of output 557 [2021-08-26 14:07:50,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:07:50,200 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:50,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:07:50,424 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:50,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:50,631 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:50,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:51,038 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:07:51,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:07:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:51,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479540464] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:51,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:51,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 37 [2021-08-26 14:07:51,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781129141] [2021-08-26 14:07:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 14:07:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 14:07:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1382, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 14:07:51,110 INFO L87 Difference]: Start difference. First operand 763 states and 1504 transitions. Second operand has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:07:53,434 INFO L93 Difference]: Finished difference Result 1550 states and 3074 transitions. [2021-08-26 14:07:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-26 14:07:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 14:07:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:07:53,437 INFO L225 Difference]: With dead ends: 1550 [2021-08-26 14:07:53,437 INFO L226 Difference]: Without dead ends: 1550 [2021-08-26 14:07:53,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1629.4ms TimeCoverageRelationStatistics Valid=286, Invalid=3620, Unknown=0, NotChecked=0, Total=3906 [2021-08-26 14:07:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-08-26 14:07:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 773. [2021-08-26 14:07:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.9766839378238341) internal successors, (1526), 772 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1526 transitions. [2021-08-26 14:07:53,449 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1526 transitions. Word has length 58 [2021-08-26 14:07:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:07:53,450 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1526 transitions. [2021-08-26 14:07:53,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:07:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1526 transitions. [2021-08-26 14:07:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 14:07:53,451 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:07:53,451 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:07:53,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 14:07:53,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:53,665 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:07:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:07:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 166921825, now seen corresponding path program 12 times [2021-08-26 14:07:53,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:07:53,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611811370] [2021-08-26 14:07:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:07:53,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:07:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:07:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:54,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:07:54,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611811370] [2021-08-26 14:07:54,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611811370] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:54,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925016989] [2021-08-26 14:07:54,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 14:07:54,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:07:54,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:07:54,480 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:07:54,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 14:07:55,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-26 14:07:55,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:07:55,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 95 conjunts are in the unsatisfiable core [2021-08-26 14:07:55,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:07:56,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:07:56,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:56,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2021-08-26 14:07:56,433 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:07:56,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:07:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:07:56,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:07:56,999 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:07:57,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:07:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:07:57,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925016989] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:07:57,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:07:57,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 40 [2021-08-26 14:07:57,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635144045] [2021-08-26 14:07:57,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-26 14:07:57,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:07:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-26 14:07:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1620, Unknown=0, NotChecked=0, Total=1722 [2021-08-26 14:07:57,071 INFO L87 Difference]: Start difference. First operand 773 states and 1526 transitions. Second operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:08:01,011 INFO L93 Difference]: Finished difference Result 1449 states and 2876 transitions. [2021-08-26 14:08:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-26 14:08:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 14:08:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:08:01,015 INFO L225 Difference]: With dead ends: 1449 [2021-08-26 14:08:01,015 INFO L226 Difference]: Without dead ends: 1449 [2021-08-26 14:08:01,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 3067.8ms TimeCoverageRelationStatistics Valid=485, Invalid=5995, Unknown=0, NotChecked=0, Total=6480 [2021-08-26 14:08:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-08-26 14:08:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 704. [2021-08-26 14:08:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.9786628733997156) internal successors, (1391), 703 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1391 transitions. [2021-08-26 14:08:01,029 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1391 transitions. Word has length 58 [2021-08-26 14:08:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:08:01,030 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1391 transitions. [2021-08-26 14:08:01,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1391 transitions. [2021-08-26 14:08:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 14:08:01,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:08:01,031 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:08:01,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 14:08:01,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:01,237 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:08:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:08:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1129415557, now seen corresponding path program 13 times [2021-08-26 14:08:01,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:08:01,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177535574] [2021-08-26 14:08:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:08:01,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:08:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:08:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:02,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:08:02,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177535574] [2021-08-26 14:08:02,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177535574] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:02,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091145156] [2021-08-26 14:08:02,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 14:08:02,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:08:02,094 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:08:02,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 14:08:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:08:03,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 94 conjunts are in the unsatisfiable core [2021-08-26 14:08:03,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:08:03,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:08:04,074 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 14:08:04,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-08-26 14:08:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:08:04,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2021-08-26 14:08:04,461 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:08:04,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:08:04,895 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:08:04,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:08:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:04,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091145156] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:04,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:08:04,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 45 [2021-08-26 14:08:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532064281] [2021-08-26 14:08:04,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-26 14:08:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:08:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-26 14:08:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2041, Unknown=0, NotChecked=0, Total=2162 [2021-08-26 14:08:04,960 INFO L87 Difference]: Start difference. First operand 704 states and 1391 transitions. Second operand has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:08:09,253 INFO L93 Difference]: Finished difference Result 1153 states and 2303 transitions. [2021-08-26 14:08:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-26 14:08:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 14:08:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:08:09,256 INFO L225 Difference]: With dead ends: 1153 [2021-08-26 14:08:09,256 INFO L226 Difference]: Without dead ends: 1153 [2021-08-26 14:08:09,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 3233.9ms TimeCoverageRelationStatistics Valid=498, Invalid=6474, Unknown=0, NotChecked=0, Total=6972 [2021-08-26 14:08:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-08-26 14:08:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 732. [2021-08-26 14:08:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 2.0259917920656636) internal successors, (1481), 731 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1481 transitions. [2021-08-26 14:08:09,266 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1481 transitions. Word has length 58 [2021-08-26 14:08:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:08:09,266 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1481 transitions. [2021-08-26 14:08:09,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1481 transitions. [2021-08-26 14:08:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 14:08:09,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:08:09,267 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:08:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 14:08:09,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-08-26 14:08:09,469 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:08:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:08:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash 536993787, now seen corresponding path program 14 times [2021-08-26 14:08:09,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:08:09,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996150691] [2021-08-26 14:08:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:08:09,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:08:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:08:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:10,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:08:10,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996150691] [2021-08-26 14:08:10,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996150691] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:10,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678328098] [2021-08-26 14:08:10,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:08:10,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:08:10,494 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:08:10,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 14:08:11,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:08:11,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:08:11,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 91 conjunts are in the unsatisfiable core [2021-08-26 14:08:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:08:11,953 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:08:11,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 152 [2021-08-26 14:08:12,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:08:12,461 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:08:12,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:08:12,689 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:08:12,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:08:12,747 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:08:12,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:08:13,157 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-26 14:08:13,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-08-26 14:08:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:13,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678328098] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:13,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:08:13,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27] total 39 [2021-08-26 14:08:13,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139068083] [2021-08-26 14:08:13,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-08-26 14:08:13,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:08:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-08-26 14:08:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2021-08-26 14:08:13,224 INFO L87 Difference]: Start difference. First operand 732 states and 1481 transitions. Second operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:08:16,550 INFO L93 Difference]: Finished difference Result 1346 states and 2698 transitions. [2021-08-26 14:08:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-26 14:08:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 14:08:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:08:16,564 INFO L225 Difference]: With dead ends: 1346 [2021-08-26 14:08:16,565 INFO L226 Difference]: Without dead ends: 1346 [2021-08-26 14:08:16,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 2326.5ms TimeCoverageRelationStatistics Valid=444, Invalid=5562, Unknown=0, NotChecked=0, Total=6006 [2021-08-26 14:08:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-08-26 14:08:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 646. [2021-08-26 14:08:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.972093023255814) internal successors, (1272), 645 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1272 transitions. [2021-08-26 14:08:16,575 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1272 transitions. Word has length 58 [2021-08-26 14:08:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:08:16,576 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 1272 transitions. [2021-08-26 14:08:16,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1272 transitions. [2021-08-26 14:08:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-26 14:08:16,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:08:16,577 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:08:16,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 14:08:16,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-26 14:08:16,793 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:08:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:08:16,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1060816520, now seen corresponding path program 15 times [2021-08-26 14:08:16,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:08:16,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774765815] [2021-08-26 14:08:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:08:16,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:08:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:08:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:17,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:08:17,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774765815] [2021-08-26 14:08:17,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774765815] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:17,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490293506] [2021-08-26 14:08:17,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:08:17,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:17,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:08:17,631 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:08:17,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 14:08:19,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 14:08:19,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:08:19,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 78 conjunts are in the unsatisfiable core [2021-08-26 14:08:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:08:19,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:08:19,645 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:08:19,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:08:19,901 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:08:19,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:08:20,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-08-26 14:08:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 42 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 14:08:20,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490293506] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:20,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:08:20,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 49 [2021-08-26 14:08:20,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724998181] [2021-08-26 14:08:20,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-08-26 14:08:20,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:08:20,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-08-26 14:08:20,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2315, Unknown=0, NotChecked=0, Total=2450 [2021-08-26 14:08:20,598 INFO L87 Difference]: Start difference. First operand 646 states and 1272 transitions. Second operand has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:08:44,105 INFO L93 Difference]: Finished difference Result 2415 states and 4736 transitions. [2021-08-26 14:08:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-08-26 14:08:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-08-26 14:08:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:08:44,109 INFO L225 Difference]: With dead ends: 2415 [2021-08-26 14:08:44,109 INFO L226 Difference]: Without dead ends: 2415 [2021-08-26 14:08:44,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13209 ImplicationChecksByTransitivity, 20302.2ms TimeCoverageRelationStatistics Valid=3124, Invalid=38288, Unknown=0, NotChecked=0, Total=41412 [2021-08-26 14:08:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-08-26 14:08:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 692. [2021-08-26 14:08:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 2.0188133140376268) internal successors, (1395), 691 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1395 transitions. [2021-08-26 14:08:44,125 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1395 transitions. Word has length 65 [2021-08-26 14:08:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:08:44,125 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1395 transitions. [2021-08-26 14:08:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:08:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1395 transitions. [2021-08-26 14:08:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-26 14:08:44,126 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:08:44,126 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:08:44,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-26 14:08:44,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:44,330 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:08:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:08:44,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1389114510, now seen corresponding path program 16 times [2021-08-26 14:08:44,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:08:44,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371433730] [2021-08-26 14:08:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:08:44,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:08:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:08:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:45,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:08:45,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371433730] [2021-08-26 14:08:45,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371433730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:45,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780955904] [2021-08-26 14:08:45,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:08:45,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:08:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:08:45,313 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:08:45,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-26 14:08:46,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:08:46,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:08:46,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 86 conjunts are in the unsatisfiable core [2021-08-26 14:08:46,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:08:47,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:08:47,479 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-26 14:08:47,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 41 [2021-08-26 14:08:47,897 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:08:47,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:08:48,224 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:08:48,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:08:49,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 51 [2021-08-26 14:08:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:08:49,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780955904] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:08:49,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:08:49,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 56 [2021-08-26 14:08:49,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428626256] [2021-08-26 14:08:49,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-26 14:08:49,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:08:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-26 14:08:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2021-08-26 14:08:49,255 INFO L87 Difference]: Start difference. First operand 692 states and 1395 transitions. Second operand has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:09:02,066 INFO L93 Difference]: Finished difference Result 1349 states and 2672 transitions. [2021-08-26 14:09:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-26 14:09:02,067 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-08-26 14:09:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:09:02,068 INFO L225 Difference]: With dead ends: 1349 [2021-08-26 14:09:02,068 INFO L226 Difference]: Without dead ends: 1349 [2021-08-26 14:09:02,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3077 ImplicationChecksByTransitivity, 11199.7ms TimeCoverageRelationStatistics Valid=1348, Invalid=12932, Unknown=0, NotChecked=0, Total=14280 [2021-08-26 14:09:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-08-26 14:09:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 610. [2021-08-26 14:09:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 2.0) internal successors, (1218), 609 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1218 transitions. [2021-08-26 14:09:02,077 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1218 transitions. Word has length 65 [2021-08-26 14:09:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:09:02,077 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1218 transitions. [2021-08-26 14:09:02,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1218 transitions. [2021-08-26 14:09:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-26 14:09:02,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:09:02,078 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:09:02,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-26 14:09:02,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:02,279 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:09:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:09:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash -705914917, now seen corresponding path program 17 times [2021-08-26 14:09:02,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:09:02,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276960081] [2021-08-26 14:09:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:09:02,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:09:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:09:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:03,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:09:03,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276960081] [2021-08-26 14:09:03,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276960081] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:03,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626474125] [2021-08-26 14:09:03,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:09:03,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:09:03,198 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:09:03,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-26 14:09:04,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 14:09:04,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:09:04,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 101 conjunts are in the unsatisfiable core [2021-08-26 14:09:04,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:09:04,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:09:05,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:09:05,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:09:05,310 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:09:05,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:09:05,501 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:09:05,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:09:06,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:09:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626474125] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:06,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:09:06,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27] total 44 [2021-08-26 14:09:06,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875047389] [2021-08-26 14:09:06,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-26 14:09:06,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:09:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-26 14:09:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1887, Unknown=0, NotChecked=0, Total=2070 [2021-08-26 14:09:06,261 INFO L87 Difference]: Start difference. First operand 610 states and 1218 transitions. Second operand has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:09:09,286 INFO L93 Difference]: Finished difference Result 1382 states and 2725 transitions. [2021-08-26 14:09:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-26 14:09:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-26 14:09:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:09:09,288 INFO L225 Difference]: With dead ends: 1382 [2021-08-26 14:09:09,288 INFO L226 Difference]: Without dead ends: 751 [2021-08-26 14:09:09,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 2478.7ms TimeCoverageRelationStatistics Valid=679, Invalid=6461, Unknown=0, NotChecked=0, Total=7140 [2021-08-26 14:09:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-08-26 14:09:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 693. [2021-08-26 14:09:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.0303468208092488) internal successors, (1405), 692 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1405 transitions. [2021-08-26 14:09:09,295 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1405 transitions. Word has length 66 [2021-08-26 14:09:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:09:09,295 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 1405 transitions. [2021-08-26 14:09:09,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1405 transitions. [2021-08-26 14:09:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-26 14:09:09,296 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:09:09,296 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:09:09,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-26 14:09:09,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:09,501 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:09:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:09:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1410994721, now seen corresponding path program 18 times [2021-08-26 14:09:09,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:09:09,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436344571] [2021-08-26 14:09:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:09:09,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:09:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:09:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:10,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:09:10,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436344571] [2021-08-26 14:09:10,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436344571] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:10,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523783334] [2021-08-26 14:09:10,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 14:09:10,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:10,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:09:10,433 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:09:10,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-26 14:09:12,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-26 14:09:12,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:09:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 99 conjunts are in the unsatisfiable core [2021-08-26 14:09:12,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:09:12,240 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:09:12,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 792 treesize of output 758 [2021-08-26 14:09:12,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:09:12,563 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-26 14:09:12,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 42 [2021-08-26 14:09:12,869 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:09:12,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:09:13,128 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:09:13,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:09:13,393 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:09:13,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:09:14,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-08-26 14:09:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:14,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523783334] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:14,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:09:14,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 62 [2021-08-26 14:09:14,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872598318] [2021-08-26 14:09:14,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-08-26 14:09:14,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:09:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-08-26 14:09:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3804, Unknown=0, NotChecked=0, Total=4032 [2021-08-26 14:09:14,319 INFO L87 Difference]: Start difference. First operand 693 states and 1405 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:49,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:09:49,294 INFO L93 Difference]: Finished difference Result 1487 states and 2913 transitions. [2021-08-26 14:09:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-08-26 14:09:49,294 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-26 14:09:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:09:49,296 INFO L225 Difference]: With dead ends: 1487 [2021-08-26 14:09:49,296 INFO L226 Difference]: Without dead ends: 929 [2021-08-26 14:09:49,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12475 ImplicationChecksByTransitivity, 30881.6ms TimeCoverageRelationStatistics Valid=3229, Invalid=36571, Unknown=0, NotChecked=0, Total=39800 [2021-08-26 14:09:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-08-26 14:09:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 839. [2021-08-26 14:09:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 1.9570405727923628) internal successors, (1640), 838 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1640 transitions. [2021-08-26 14:09:49,306 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1640 transitions. Word has length 66 [2021-08-26 14:09:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:09:49,306 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1640 transitions. [2021-08-26 14:09:49,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1640 transitions. [2021-08-26 14:09:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-26 14:09:49,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:09:49,307 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:09:49,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-26 14:09:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-26 14:09:49,508 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:09:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:09:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash -574986900, now seen corresponding path program 19 times [2021-08-26 14:09:49,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:09:49,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32179720] [2021-08-26 14:09:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:09:49,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:09:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:09:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:50,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:09:50,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32179720] [2021-08-26 14:09:50,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32179720] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:50,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063173498] [2021-08-26 14:09:50,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 14:09:50,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:09:50,735 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:09:50,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-26 14:09:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:09:52,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 126 conjunts are in the unsatisfiable core [2021-08-26 14:09:52,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:09:52,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:09:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:09:52,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:09:53,079 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:09:53,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:09:53,277 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:09:53,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:09:53,481 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:09:53,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:09:54,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:09:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063173498] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:54,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:09:54,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 33] total 56 [2021-08-26 14:09:54,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911486429] [2021-08-26 14:09:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-26 14:09:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:09:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-26 14:09:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2021-08-26 14:09:54,496 INFO L87 Difference]: Start difference. First operand 839 states and 1640 transitions. Second operand has 58 states, 57 states have (on average 2.2982456140350878) internal successors, (131), 57 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:09:57,486 INFO L93 Difference]: Finished difference Result 1159 states and 2258 transitions. [2021-08-26 14:09:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-26 14:09:57,486 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.2982456140350878) internal successors, (131), 57 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-08-26 14:09:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:09:57,487 INFO L225 Difference]: With dead ends: 1159 [2021-08-26 14:09:57,487 INFO L226 Difference]: Without dead ends: 711 [2021-08-26 14:09:57,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2096 ImplicationChecksByTransitivity, 2348.9ms TimeCoverageRelationStatistics Valid=596, Invalid=6714, Unknown=0, NotChecked=0, Total=7310 [2021-08-26 14:09:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-08-26 14:09:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-08-26 14:09:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.9154929577464788) internal successors, (1360), 710 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1360 transitions. [2021-08-26 14:09:57,494 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1360 transitions. Word has length 81 [2021-08-26 14:09:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:09:57,494 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1360 transitions. [2021-08-26 14:09:57,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.2982456140350878) internal successors, (131), 57 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:09:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1360 transitions. [2021-08-26 14:09:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-26 14:09:57,496 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:09:57,496 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:09:57,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-26 14:09:57,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-26 14:09:57,699 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:09:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:09:57,700 INFO L82 PathProgramCache]: Analyzing trace with hash -779331994, now seen corresponding path program 20 times [2021-08-26 14:09:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:09:57,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581025306] [2021-08-26 14:09:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:09:57,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:09:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:09:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:09:59,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:09:59,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581025306] [2021-08-26 14:09:59,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581025306] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:09:59,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201251970] [2021-08-26 14:09:59,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 14:09:59,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:09:59,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:09:59,005 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:09:59,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-26 14:10:01,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 14:10:01,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:10:01,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 123 conjunts are in the unsatisfiable core [2021-08-26 14:10:01,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:10:01,079 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:10:01,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 490 treesize of output 486 [2021-08-26 14:10:01,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:10:01,288 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:01,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:10:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:10:01,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:10:01,678 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:01,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:01,885 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:01,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:02,094 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:02,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:10:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:10:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201251970] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:10:03,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:10:03,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 33] total 56 [2021-08-26 14:10:03,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670457736] [2021-08-26 14:10:03,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-26 14:10:03,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:10:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-26 14:10:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2021-08-26 14:10:03,078 INFO L87 Difference]: Start difference. First operand 711 states and 1360 transitions. Second operand has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:10:06,577 INFO L93 Difference]: Finished difference Result 1558 states and 2976 transitions. [2021-08-26 14:10:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-26 14:10:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-08-26 14:10:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:10:06,578 INFO L225 Difference]: With dead ends: 1558 [2021-08-26 14:10:06,578 INFO L226 Difference]: Without dead ends: 701 [2021-08-26 14:10:06,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2728 ImplicationChecksByTransitivity, 3123.7ms TimeCoverageRelationStatistics Valid=798, Invalid=8708, Unknown=0, NotChecked=0, Total=9506 [2021-08-26 14:10:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-08-26 14:10:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2021-08-26 14:10:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.9114285714285715) internal successors, (1338), 700 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1338 transitions. [2021-08-26 14:10:06,585 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1338 transitions. Word has length 81 [2021-08-26 14:10:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:10:06,586 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1338 transitions. [2021-08-26 14:10:06,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1338 transitions. [2021-08-26 14:10:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-26 14:10:06,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:10:06,587 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:10:06,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-26 14:10:06,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-26 14:10:06,787 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:10:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:10:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash 31954632, now seen corresponding path program 21 times [2021-08-26 14:10:06,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:10:06,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115371685] [2021-08-26 14:10:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:10:06,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:10:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:10:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:10:08,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:10:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115371685] [2021-08-26 14:10:08,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115371685] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:10:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172489865] [2021-08-26 14:10:08,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 14:10:08,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:10:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:10:08,150 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:10:08,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-26 14:10:10,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-26 14:10:10,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:10:10,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 133 conjunts are in the unsatisfiable core [2021-08-26 14:10:10,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:10:10,414 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 14:10:10,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 557 treesize of output 545 [2021-08-26 14:10:10,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-26 14:10:10,750 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:10,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-26 14:10:10,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 14:10:10,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-26 14:10:11,125 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:11,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:11,328 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:11,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:11,563 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 14:10:11,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-26 14:10:12,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-08-26 14:10:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:10:12,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172489865] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:10:12,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:10:12,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 34] total 58 [2021-08-26 14:10:12,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494099381] [2021-08-26 14:10:12,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-08-26 14:10:12,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:10:12,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-08-26 14:10:12,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3267, Unknown=0, NotChecked=0, Total=3540 [2021-08-26 14:10:12,544 INFO L87 Difference]: Start difference. First operand 701 states and 1338 transitions. Second operand has 60 states, 59 states have (on average 2.3220338983050848) internal successors, (137), 59 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:10:16,138 INFO L93 Difference]: Finished difference Result 1513 states and 2884 transitions. [2021-08-26 14:10:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-26 14:10:16,138 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.3220338983050848) internal successors, (137), 59 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-08-26 14:10:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:10:16,139 INFO L225 Difference]: With dead ends: 1513 [2021-08-26 14:10:16,139 INFO L226 Difference]: Without dead ends: 666 [2021-08-26 14:10:16,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3009 ImplicationChecksByTransitivity, 3527.2ms TimeCoverageRelationStatistics Valid=881, Invalid=10039, Unknown=0, NotChecked=0, Total=10920 [2021-08-26 14:10:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-08-26 14:10:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2021-08-26 14:10:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.8962406015037594) internal successors, (1261), 665 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1261 transitions. [2021-08-26 14:10:16,146 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1261 transitions. Word has length 81 [2021-08-26 14:10:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:10:16,146 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1261 transitions. [2021-08-26 14:10:16,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.3220338983050848) internal successors, (137), 59 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:10:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1261 transitions. [2021-08-26 14:10:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-26 14:10:16,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:10:16,148 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:10:16,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-26 14:10:16,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-26 14:10:16,348 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:10:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:10:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1656128276, now seen corresponding path program 22 times [2021-08-26 14:10:16,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:10:16,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084816712] [2021-08-26 14:10:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:10:16,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:10:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:10:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:10:17,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:10:17,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084816712] [2021-08-26 14:10:17,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084816712] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:10:17,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559675660] [2021-08-26 14:10:17,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 14:10:17,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:10:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:10:17,783 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:10:17,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-26 14:10:20,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 14:10:20,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:10:20,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 131 conjunts are in the unsatisfiable core [2021-08-26 14:10:20,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:10:20,173 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 14:10:20,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6105 treesize of output 5817 [2021-08-26 14:10:20,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-26 14:10:21,107 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:10:21,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:10:21,261 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:10:21,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-08-26 14:10:21,511 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:10:21,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:10:21,797 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:10:21,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:10:22,092 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-26 14:10:22,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-26 14:10:23,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-08-26 14:10:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:10:47,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559675660] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:10:47,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 14:10:47,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 36] total 79 [2021-08-26 14:10:47,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357140809] [2021-08-26 14:10:47,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-08-26 14:10:47,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:10:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-08-26 14:10:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=6141, Unknown=12, NotChecked=0, Total=6480 [2021-08-26 14:10:47,813 INFO L87 Difference]: Start difference. First operand 666 states and 1261 transitions. Second operand has 81 states, 80 states have (on average 2.025) internal successors, (162), 80 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:12:29,646 INFO L93 Difference]: Finished difference Result 906 states and 1717 transitions. [2021-08-26 14:12:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-08-26 14:12:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.025) internal successors, (162), 80 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-08-26 14:12:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:12:29,647 INFO L225 Difference]: With dead ends: 906 [2021-08-26 14:12:29,647 INFO L226 Difference]: Without dead ends: 322 [2021-08-26 14:12:29,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10979 ImplicationChecksByTransitivity, 118689.0ms TimeCoverageRelationStatistics Valid=3317, Invalid=35283, Unknown=12, NotChecked=0, Total=38612 [2021-08-26 14:12:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-26 14:12:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-08-26 14:12:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.8317757009345794) internal successors, (588), 321 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 588 transitions. [2021-08-26 14:12:29,652 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 588 transitions. Word has length 81 [2021-08-26 14:12:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:12:29,652 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 588 transitions. [2021-08-26 14:12:29,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.025) internal successors, (162), 80 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 588 transitions. [2021-08-26 14:12:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-26 14:12:29,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:12:29,653 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:12:29,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-26 14:12:29,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:12:29,869 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:12:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:12:29,869 INFO L82 PathProgramCache]: Analyzing trace with hash -672614070, now seen corresponding path program 23 times [2021-08-26 14:12:29,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:12:29,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404283589] [2021-08-26 14:12:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:12:29,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:12:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:12:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 129 proven. 44 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 14:12:29,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:12:29,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404283589] [2021-08-26 14:12:29,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404283589] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 14:12:29,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080424863] [2021-08-26 14:12:29,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 14:12:29,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 14:12:29,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:12:29,943 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 14:12:29,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-26 14:12:32,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 14:12:32,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 14:12:32,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 14:12:32,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 14:12:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 14:12:32,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080424863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:12:32,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 14:12:32,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-08-26 14:12:32,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127730342] [2021-08-26 14:12:32,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 14:12:32,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:12:32,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 14:12:32,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:12:32,565 INFO L87 Difference]: Start difference. First operand 322 states and 588 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:12:32,584 INFO L93 Difference]: Finished difference Result 274 states and 492 transitions. [2021-08-26 14:12:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 14:12:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-08-26 14:12:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:12:32,584 INFO L225 Difference]: With dead ends: 274 [2021-08-26 14:12:32,584 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:12:32,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-26 14:12:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:12:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:12:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:12:32,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2021-08-26 14:12:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:12:32,585 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:12:32,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:12:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:12:32,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:12:32,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:12:32,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-08-26 14:12:32,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-08-26 14:12:32,804 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:12:32,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:12:32,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:12:32 BasicIcfg [2021-08-26 14:12:32,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:12:32,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:12:32,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:12:32,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:12:32,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:06:00" (3/4) ... [2021-08-26 14:12:32,807 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:12:32,811 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2021-08-26 14:12:32,811 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2021-08-26 14:12:32,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 14:12:32,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-26 14:12:32,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:12:32,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:12:32,837 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:12:32,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:12:32,839 INFO L168 Benchmark]: Toolchain (without parser) took 393565.53 ms. Allocated memory was 65.0 MB in the beginning and 1.1 GB in the end (delta: 1.1 GB). Free memory was 43.7 MB in the beginning and 531.7 MB in the end (delta: -488.0 MB). Peak memory consumption was 564.0 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,839 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:12:32,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.21 ms. Allocated memory is still 65.0 MB. Free memory was 43.6 MB in the beginning and 29.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.20 ms. Allocated memory is still 65.0 MB. Free memory was 29.6 MB in the beginning and 46.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,840 INFO L168 Benchmark]: Boogie Preprocessor took 45.91 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,841 INFO L168 Benchmark]: RCFGBuilder took 439.25 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 49.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,842 INFO L168 Benchmark]: TraceAbstraction took 392432.69 ms. Allocated memory was 83.9 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 49.5 MB in the beginning and 534.3 MB in the end (delta: -484.9 MB). Peak memory consumption was 549.4 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,842 INFO L168 Benchmark]: Witness Printer took 32.96 ms. Allocated memory is still 1.1 GB. Free memory was 534.3 MB in the beginning and 531.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:12:32,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.21 ms. Allocated memory is still 65.0 MB. Free memory was 43.6 MB in the beginning and 29.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.20 ms. Allocated memory is still 65.0 MB. Free memory was 29.6 MB in the beginning and 46.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.91 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 439.25 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 49.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 392432.69 ms. Allocated memory was 83.9 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 49.5 MB in the beginning and 534.3 MB in the end (delta: -484.9 MB). Peak memory consumption was 549.4 MB. Max. memory is 16.1 GB. * Witness Printer took 32.96 ms. Allocated memory is still 1.1 GB. Free memory was 534.3 MB in the beginning and 531.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5808.5ms, 149 PlacesBefore, 38 PlacesAfterwards, 152 TransitionsBefore, 36 TransitionsAfterwards, 6156 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 142 TotalNumberOfCompositions, 8550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6575, positive: 6406, positive conditional: 0, positive unconditional: 6406, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4428, positive: 4372, positive conditional: 0, positive unconditional: 4372, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4428, positive: 4358, positive conditional: 0, positive unconditional: 4358, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 117, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6575, positive: 2034, positive conditional: 0, positive unconditional: 2034, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 4428, unknown conditional: 0, unknown unconditional: 4428] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 249, Positive conditional cache size: 0, Positive unconditional cache size: 249, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 392265.0ms, OverallIterations: 42, TraceHistogramMax: 6, EmptinessCheckTime: 58.5ms, AutomataDifference: 260324.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5860.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3179 SDtfs, 16245 SDslu, 58275 SDs, 0 SdLazy, 93800 SolverSat, 3879 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47393.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4102 GetRequests, 1451 SyntacticMatches, 105 SemanticMatches, 2546 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78993 ImplicationChecksByTransitivity, 253248.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1379occurred in iteration=26, InterpolantAutomatonStates: 1659, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 519.1ms AutomataMinimizationTime, 42 MinimizatonAttempts, 15314 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 655.4ms SsaConstructionTime, 3141.9ms SatisfiabilityAnalysisTime, 84379.3ms InterpolantComputationTime, 3624 NumberOfCodeBlocks, 3610 NumberOfCodeBlocksAsserted, 133 NumberOfCheckSat, 3547 ConstructedInterpolants, 1 QuantifiedInterpolants, 77182 SizeOfPredicates, 1182 NumberOfNonLiveVariables, 12678 ConjunctsInSsa, 2371 ConjunctsInUnsatCore, 77 InterpolantComputations, 9 PerfectInterpolantSequences, 909/4342 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 14:12:32,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...