./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 f60b427ba9e1ae31b725c8d59223d46e52834159 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 21:36:05,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 21:36:05,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 21:36:05,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 21:36:05,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 21:36:05,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 21:36:05,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 21:36:05,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 21:36:05,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 21:36:05,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 21:36:05,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 21:36:05,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 21:36:05,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 21:36:05,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 21:36:05,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 21:36:05,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 21:36:05,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 21:36:05,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 21:36:05,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 21:36:05,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 21:36:05,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 21:36:05,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 21:36:05,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 21:36:05,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 21:36:05,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 21:36:05,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 21:36:05,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 21:36:05,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 21:36:05,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 21:36:05,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 21:36:05,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 21:36:05,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 21:36:05,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 21:36:05,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 21:36:05,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 21:36:05,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 21:36:05,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 21:36:05,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 21:36:05,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 21:36:05,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 21:36:05,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 21:36:05,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 21:36:05,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 21:36:05,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 21:36:05,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 21:36:05,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 21:36:05,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 21:36:05,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 21:36:05,663 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 21:36:05,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 21:36:05,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 21:36:05,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 21:36:05,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 21:36:05,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 21:36:05,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 21:36:05,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 21:36:05,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 21:36:05,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 21:36:05,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 21:36:05,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 21:36:05,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 21:36:05,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 21:36:05,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 21:36:05,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 21:36:05,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 21:36:05,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 21:36:05,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 21:36:05,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 21:36:05,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 21:36:05,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 21:36:05,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 21:36:05,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 21:36:05,670 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f60b427ba9e1ae31b725c8d59223d46e52834159 [2021-10-05 21:36:06,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 21:36:06,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 21:36:06,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 21:36:06,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 21:36:06,164 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 21:36:06,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c [2021-10-05 21:36:06,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e75f6546/d8d6197bb7bf49fcb54d77984afca868/FLAG782cf0d93 [2021-10-05 21:36:06,903 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 21:36:06,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c [2021-10-05 21:36:06,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e75f6546/d8d6197bb7bf49fcb54d77984afca868/FLAG782cf0d93 [2021-10-05 21:36:07,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e75f6546/d8d6197bb7bf49fcb54d77984afca868 [2021-10-05 21:36:07,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 21:36:07,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 21:36:07,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 21:36:07,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 21:36:07,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 21:36:07,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bad7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07, skipping insertion in model container [2021-10-05 21:36:07,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 21:36:07,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 21:36:07,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c[2228,2241] [2021-10-05 21:36:07,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 21:36:07,632 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 21:36:07,658 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c[2228,2241] [2021-10-05 21:36:07,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 21:36:07,683 INFO L208 MainTranslator]: Completed translation [2021-10-05 21:36:07,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07 WrapperNode [2021-10-05 21:36:07,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 21:36:07,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 21:36:07,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 21:36:07,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 21:36:07,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 21:36:07,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 21:36:07,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 21:36:07,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 21:36:07,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 21:36:07,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 21:36:07,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 21:36:07,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 21:36:07,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (1/1) ... [2021-10-05 21:36:07,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 21:36:07,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 21:36:07,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-05 21:36:07,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-05 21:36:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 21:36:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 21:36:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 21:36:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 21:36:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 21:36:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 21:36:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 21:36:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 21:36:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 21:36:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-05 21:36:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-05 21:36:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-05 21:36:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 21:36:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 21:36:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 21:36:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 21:36:07,966 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 21:36:08,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 21:36:08,546 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-05 21:36:08,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 09:36:08 BoogieIcfgContainer [2021-10-05 21:36:08,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 21:36:08,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 21:36:08,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 21:36:08,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 21:36:08,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 09:36:07" (1/3) ... [2021-10-05 21:36:08,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203c3e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 09:36:08, skipping insertion in model container [2021-10-05 21:36:08,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 09:36:07" (2/3) ... [2021-10-05 21:36:08,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203c3e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 09:36:08, skipping insertion in model container [2021-10-05 21:36:08,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 09:36:08" (3/3) ... [2021-10-05 21:36:08,567 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.c [2021-10-05 21:36:08,579 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 21:36:08,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 21:36:08,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 21:36:08,580 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 21:36:08,626 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,627 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,627 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,627 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,629 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,630 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,632 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,632 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,633 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,653 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,654 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,654 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,654 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 21:36:08,664 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-05 21:36:08,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 21:36:08,730 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 [2021-10-05 21:36:08,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-05 21:36:08,750 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 21:36:08,763 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 123 transitions, 270 flow [2021-10-05 21:36:08,767 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 123 transitions, 270 flow [2021-10-05 21:36:08,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 123 transitions, 270 flow [2021-10-05 21:36:08,873 INFO L129 PetriNetUnfolder]: 9/120 cut-off events. [2021-10-05 21:36:08,874 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-05 21:36:08,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 9/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-05 21:36:08,887 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-10-05 21:36:14,811 INFO L131 LiptonReduction]: Checked pairs total: 1074 [2021-10-05 21:36:14,812 INFO L133 LiptonReduction]: Total number of compositions: 115 [2021-10-05 21:36:14,821 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2021-10-05 21:36:14,838 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-05 21:36:14,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 21:36:14,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 21:36:14,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 21:36:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 21:36:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash 409190353, now seen corresponding path program 1 times [2021-10-05 21:36:14,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 21:36:14,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948134619] [2021-10-05 21:36:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:14,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 21:36:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 21:36:15,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 21:36:15,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948134619] [2021-10-05 21:36:15,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948134619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 21:36:15,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 21:36:15,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 21:36:15,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092161756] [2021-10-05 21:36:15,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 21:36:15,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 21:36:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 21:36:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 21:36:15,268 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 0 states have call successors, (0), 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 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 21:36:15,328 INFO L93 Difference]: Finished difference Result 103 states and 280 transitions. [2021-10-05 21:36:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 21:36:15,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-05 21:36:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 21:36:15,344 INFO L225 Difference]: With dead ends: 103 [2021-10-05 21:36:15,344 INFO L226 Difference]: Without dead ends: 103 [2021-10-05 21:36:15,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 21:36:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-05 21:36:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-05 21:36:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.7450980392156863) internal successors, (280), 102 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 280 transitions. [2021-10-05 21:36:15,395 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 280 transitions. Word has length 19 [2021-10-05 21:36:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 21:36:15,404 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 280 transitions. [2021-10-05 21:36:15,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 280 transitions. [2021-10-05 21:36:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-05 21:36:15,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 21:36:15,407 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] [2021-10-05 21:36:15,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 21:36:15,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 21:36:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 21:36:15,409 INFO L82 PathProgramCache]: Analyzing trace with hash 512392666, now seen corresponding path program 1 times [2021-10-05 21:36:15,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 21:36:15,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962747446] [2021-10-05 21:36:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:15,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 21:36:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 21:36:15,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 21:36:15,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962747446] [2021-10-05 21:36:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962747446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 21:36:15,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 21:36:15,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 21:36:15,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217524211] [2021-10-05 21:36:15,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 21:36:15,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 21:36:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 21:36:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 21:36:15,547 INFO L87 Difference]: Start difference. First operand 103 states and 280 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 21:36:15,596 INFO L93 Difference]: Finished difference Result 104 states and 281 transitions. [2021-10-05 21:36:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-05 21:36:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 [2021-10-05 21:36:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 21:36:15,604 INFO L225 Difference]: With dead ends: 104 [2021-10-05 21:36:15,604 INFO L226 Difference]: Without dead ends: 104 [2021-10-05 21:36:15,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 21:36:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-05 21:36:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-05 21:36:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.7281553398058254) internal successors, (281), 103 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 281 transitions. [2021-10-05 21:36:15,624 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 281 transitions. Word has length 20 [2021-10-05 21:36:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 21:36:15,625 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 281 transitions. [2021-10-05 21:36:15,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 281 transitions. [2021-10-05 21:36:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-05 21:36:15,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 21:36:15,628 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] [2021-10-05 21:36:15,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 21:36:15,629 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 21:36:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 21:36:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash -24622697, now seen corresponding path program 1 times [2021-10-05 21:36:15,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 21:36:15,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982074484] [2021-10-05 21:36:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:15,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 21:36:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 21:36:15,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 21:36:15,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982074484] [2021-10-05 21:36:15,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982074484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 21:36:15,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134820811] [2021-10-05 21:36:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:15,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 21:36:15,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 21:36:15,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 21:36:15,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-05 21:36:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:15,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 21:36:15,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 21:36:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 21:36:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134820811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 21:36:16,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 21:36:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-05 21:36:16,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042238844] [2021-10-05 21:36:16,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 21:36:16,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 21:36:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 21:36:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-05 21:36:16,018 INFO L87 Difference]: Start difference. First operand 104 states and 281 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 21:36:16,100 INFO L93 Difference]: Finished difference Result 130 states and 357 transitions. [2021-10-05 21:36:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 21:36:16,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2021-10-05 21:36:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 21:36:16,104 INFO L225 Difference]: With dead ends: 130 [2021-10-05 21:36:16,105 INFO L226 Difference]: Without dead ends: 130 [2021-10-05 21:36:16,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-05 21:36:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-05 21:36:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-05 21:36:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.7674418604651163) internal successors, (357), 129 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 357 transitions. [2021-10-05 21:36:16,142 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 357 transitions. Word has length 21 [2021-10-05 21:36:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 21:36:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 357 transitions. [2021-10-05 21:36:16,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 21:36:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 357 transitions. [2021-10-05 21:36:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-05 21:36:16,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 21:36:16,152 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, 1] [2021-10-05 21:36:16,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-05 21:36:16,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 21:36:16,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 21:36:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 21:36:16,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1336154231, now seen corresponding path program 1 times [2021-10-05 21:36:16,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 21:36:16,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47771026] [2021-10-05 21:36:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:16,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 21:36:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 21:36:16,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 21:36:16,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47771026] [2021-10-05 21:36:16,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47771026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 21:36:16,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778873681] [2021-10-05 21:36:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 21:36:16,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 21:36:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 21:36:16,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 21:36:16,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-05 21:36:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 21:36:16,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-05 21:36:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 21:36:16,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-05 21:36:16,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-05 21:36:16,928 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-05 21:36:16,929 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 30 treesize of output 25 [2021-10-05 21:36:17,005 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-05 21:36:17,005 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 [2021-10-05 21:36:17,098 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 15 treesize of output 7 [2021-10-05 21:36:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 21:36:17,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778873681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 21:36:17,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 21:36:17,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2021-10-05 21:36:17,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71845308] [2021-10-05 21:36:17,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-05 21:36:17,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 21:36:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-05 21:36:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-05 21:36:17,163 INFO L87 Difference]: Start difference. First operand 130 states and 357 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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) [2021-10-05 21:36:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 21:36:17,445 INFO L93 Difference]: Finished difference Result 153 states and 428 transitions. [2021-10-05 21:36:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-05 21:36:17,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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 22 [2021-10-05 21:36:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 21:36:17,446 INFO L225 Difference]: With dead ends: 153 [2021-10-05 21:36:17,446 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 21:36:17,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 225.1ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-05 21:36:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 21:36:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 21:36:17,448 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) [2021-10-05 21:36:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 21:36:17,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-05 21:36:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 21:36:17,448 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 21:36:17,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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) [2021-10-05 21:36:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 21:36:17,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 21:36:17,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 21:36:17,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 21:36:17,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 21:36:17,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 21:36:17,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-05 21:36:17,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 21:36:17,671 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 21:36:17,671 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 21:36:17,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 09:36:17 BasicIcfg [2021-10-05 21:36:17,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 21:36:17,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 21:36:17,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 21:36:17,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 21:36:17,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 09:36:08" (3/4) ... [2021-10-05 21:36:17,679 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 21:36:17,686 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 21:36:17,686 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 21:36:17,686 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 21:36:17,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-05 21:36:17,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 21:36:17,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 21:36:17,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-05 21:36:17,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 21:36:17,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 21:36:17,745 INFO L168 Benchmark]: Toolchain (without parser) took 10477.75 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 25.1 MB in the beginning and 39.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,746 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 37.7 MB. Free memory was 17.2 MB in the beginning and 17.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 21:36:17,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.22 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 27.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 48.2 MB. Free memory was 27.3 MB in the beginning and 25.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,748 INFO L168 Benchmark]: Boogie Preprocessor took 75.22 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 21:36:17,748 INFO L168 Benchmark]: RCFGBuilder took 721.95 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 40.7 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,749 INFO L168 Benchmark]: TraceAbstraction took 9117.03 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 40.3 MB in the beginning and 42.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,750 INFO L168 Benchmark]: Witness Printer took 69.61 ms. Allocated memory is still 86.0 MB. Free memory was 42.6 MB in the beginning and 39.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 21:36:17,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 37.7 MB. Free memory was 17.2 MB in the beginning and 17.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.22 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 27.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 48.2 MB. Free memory was 27.3 MB in the beginning and 25.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.22 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 721.95 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 40.7 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9117.03 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 40.3 MB in the beginning and 42.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * Witness Printer took 69.61 ms. Allocated memory is still 86.0 MB. Free memory was 42.6 MB in the beginning and 39.5 MB in the end (delta: 3.1 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: 6045.6ms, 124 PlacesBefore, 33 PlacesAfterwards, 123 TransitionsBefore, 26 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 115 TotalNumberOfCompositions, 1074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 891, positive: 851, positive conditional: 0, positive unconditional: 851, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 507, positive: 493, positive conditional: 0, positive unconditional: 493, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 507, positive: 493, positive conditional: 0, positive unconditional: 493, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 891, positive: 358, positive conditional: 0, positive unconditional: 358, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 507, unknown conditional: 0, unknown unconditional: 507] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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: 87]: 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 7 procedures, 137 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8950.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 17.7ms, AutomataDifference: 538.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6107.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 136 SDslu, 184 SDs, 0 SdLazy, 160 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 203.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 302.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.3ms SsaConstructionTime, 363.7ms SatisfiabilityAnalysisTime, 1042.2ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 496 SizeOfPredicates, 22 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/11 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-05 21:36:17,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...