./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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-wmm/safe013_tso.opt.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 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:49:40,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:49:40,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:49:40,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:49:40,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:49:40,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:49:40,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:49:40,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:49:40,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:49:40,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:49:40,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:49:40,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:49:40,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:49:40,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:49:40,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:49:40,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:49:40,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:49:40,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:49:40,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:49:40,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:49:40,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:49:40,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:49:40,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:49:40,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:49:40,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:49:40,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:49:40,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:49:40,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:49:40,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:49:40,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:49:40,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:49:40,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:49:40,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:49:40,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:49:40,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:49:40,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:49:40,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:49:40,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:49:40,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:49:40,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:49:40,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:49:40,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:49:40,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:49:40,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:49:40,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:49:40,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:49:40,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:49:40,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:49:40,817 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:49:40,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:49:40,818 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:49:40,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:49:40,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:49:40,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:49:40,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:49:40,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:49:40,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:49:40,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:49:40,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:49:40,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:49:40,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:49:40,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:49:40,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:49:40,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:49:40,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:49:40,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:49:40,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:49:40,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:49:40,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:49:40,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:49:40,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:49:40,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:49:40,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 [2021-09-22 14:49:41,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:49:41,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:49:41,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:49:41,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:49:41,142 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:49:41,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2021-09-22 14:49:41,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8481e99c1/f8528796df674fac8318c738dbaab347/FLAG659d7a8df [2021-09-22 14:49:41,738 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:49:41,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2021-09-22 14:49:41,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8481e99c1/f8528796df674fac8318c738dbaab347/FLAG659d7a8df [2021-09-22 14:49:42,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8481e99c1/f8528796df674fac8318c738dbaab347 [2021-09-22 14:49:42,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:49:42,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:49:42,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:49:42,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:49:42,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:49:42,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afe46bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42, skipping insertion in model container [2021-09-22 14:49:42,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:49:42,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:49:42,423 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-wmm/safe013_tso.opt.i[949,962] [2021-09-22 14:49:42,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:49:42,563 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:49:42,577 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-wmm/safe013_tso.opt.i[949,962] [2021-09-22 14:49:42,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:49:42,665 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:49:42,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42 WrapperNode [2021-09-22 14:49:42,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:49:42,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:49:42,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:49:42,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:49:42,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:49:42,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:49:42,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:49:42,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:49:42,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:49:42,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:49:42,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:49:42,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:49:42,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (1/1) ... [2021-09-22 14:49:42,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:49:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:49:42,798 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) [2021-09-22 14:49:42,830 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 [2021-09-22 14:49:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:49:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:49:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:49:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:49:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:49:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:49:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:49:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:49:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-09-22 14:49:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-09-22 14:49:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:49:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:49:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:49:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:49:42,851 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:49:43,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:49:43,140 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:49:43,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:43 BoogieIcfgContainer [2021-09-22 14:49:43,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:49:43,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:49:43,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:49:43,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:49:43,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:49:42" (1/3) ... [2021-09-22 14:49:43,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49a8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:49:43, skipping insertion in model container [2021-09-22 14:49:43,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:42" (2/3) ... [2021-09-22 14:49:43,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49a8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:49:43, skipping insertion in model container [2021-09-22 14:49:43,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:43" (3/3) ... [2021-09-22 14:49:43,154 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-09-22 14:49:43,159 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:49:43,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:49:43,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:49:43,160 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:49:43,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:43,211 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:49:43,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:49:43,251 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 [2021-09-22 14:49:43,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:49:43,262 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:49:43,270 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:43,272 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:43,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:43,306 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-09-22 14:49:43,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:49:43,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-09-22 14:49:43,318 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-09-22 14:49:45,802 INFO L131 LiptonReduction]: Checked pairs total: 2794 [2021-09-22 14:49:45,802 INFO L133 LiptonReduction]: Total number of compositions: 71 [2021-09-22 14:49:45,809 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-09-22 14:49:45,832 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:49:45,840 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:45,841 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:45,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:45,846 INFO L82 PathProgramCache]: Analyzing trace with hash -82866906, now seen corresponding path program 1 times [2021-09-22 14:49:45,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:45,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405622610] [2021-09-22 14:49:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:45,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405622610] [2021-09-22 14:49:46,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405622610] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:46,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603407041] [2021-09-22 14:49:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-09-22 14:49:46,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-09-22 14:49:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:49:46,024 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,045 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-09-22 14:49:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-09-22 14:49:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-09-22 14:49:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,057 INFO L225 Difference]: With dead ends: 298 [2021-09-22 14:49:46,057 INFO L226 Difference]: Without dead ends: 298 [2021-09-22 14:49:46,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:49:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-09-22 14:49:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-09-22 14:49:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-09-22 14:49:46,107 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-09-22 14:49:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,108 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-09-22 14:49:46,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-09-22 14:49:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:49:46,110 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:49:46,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1726086537, now seen corresponding path program 1 times [2021-09-22 14:49:46,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448819534] [2021-09-22 14:49:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448819534] [2021-09-22 14:49:46,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448819534] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:46,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201344790] [2021-09-22 14:49:46,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:46,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:46,270 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,291 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2021-09-22 14:49:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:49:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-09-22 14:49:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,294 INFO L225 Difference]: With dead ends: 346 [2021-09-22 14:49:46,294 INFO L226 Difference]: Without dead ends: 282 [2021-09-22 14:49:46,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-09-22 14:49:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-09-22 14:49:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8612099644128115) internal successors, (804), 281 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2021-09-22 14:49:46,310 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2021-09-22 14:49:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,311 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2021-09-22 14:49:46,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2021-09-22 14:49:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:49:46,316 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:49:46,317 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1356048708, now seen corresponding path program 1 times [2021-09-22 14:49:46,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009899170] [2021-09-22 14:49:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009899170] [2021-09-22 14:49:46,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009899170] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954740200] [2021-09-22 14:49:46,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,431 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-09-22 14:49:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,473 INFO L93 Difference]: Finished difference Result 418 states and 1114 transitions. [2021-09-22 14:49:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:49:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-09-22 14:49:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,476 INFO L225 Difference]: With dead ends: 418 [2021-09-22 14:49:46,493 INFO L226 Difference]: Without dead ends: 306 [2021-09-22 14:49:46,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:49:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-09-22 14:49:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2021-09-22 14:49:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.7159533073929962) internal successors, (698), 257 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 698 transitions. [2021-09-22 14:49:46,506 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 698 transitions. Word has length 10 [2021-09-22 14:49:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,506 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 698 transitions. [2021-09-22 14:49:46,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-09-22 14:49:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 698 transitions. [2021-09-22 14:49:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:49:46,508 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:49:46,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash 911319308, now seen corresponding path program 1 times [2021-09-22 14:49:46,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654741046] [2021-09-22 14:49:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654741046] [2021-09-22 14:49:46,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654741046] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698482107] [2021-09-22 14:49:46,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:46,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,551 INFO L87 Difference]: Start difference. First operand 258 states and 698 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,578 INFO L93 Difference]: Finished difference Result 314 states and 817 transitions. [2021-09-22 14:49:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:49:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-09-22 14:49:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,579 INFO L225 Difference]: With dead ends: 314 [2021-09-22 14:49:46,579 INFO L226 Difference]: Without dead ends: 166 [2021-09-22 14:49:46,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-09-22 14:49:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-09-22 14:49:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-09-22 14:49:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.4606060606060605) internal successors, (406), 165 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 406 transitions. [2021-09-22 14:49:46,586 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 406 transitions. Word has length 11 [2021-09-22 14:49:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,586 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 406 transitions. [2021-09-22 14:49:46,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 406 transitions. [2021-09-22 14:49:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-09-22 14:49:46,587 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:49:46,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1207464774, now seen corresponding path program 1 times [2021-09-22 14:49:46,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247065681] [2021-09-22 14:49:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247065681] [2021-09-22 14:49:46,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247065681] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:46,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889148161] [2021-09-22 14:49:46,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:46,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:46,634 INFO L87 Difference]: Start difference. First operand 166 states and 406 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,660 INFO L93 Difference]: Finished difference Result 186 states and 415 transitions. [2021-09-22 14:49:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:49:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2021-09-22 14:49:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,662 INFO L225 Difference]: With dead ends: 186 [2021-09-22 14:49:46,662 INFO L226 Difference]: Without dead ends: 142 [2021-09-22 14:49:46,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-09-22 14:49:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-09-22 14:49:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.24822695035461) internal successors, (317), 141 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 317 transitions. [2021-09-22 14:49:46,668 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 317 transitions. Word has length 13 [2021-09-22 14:49:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,668 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 317 transitions. [2021-09-22 14:49:46,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2021-09-22 14:49:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:49:46,672 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:49:46,673 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1223049786, now seen corresponding path program 1 times [2021-09-22 14:49:46,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133910218] [2021-09-22 14:49:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133910218] [2021-09-22 14:49:46,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133910218] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:49:46,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620567362] [2021-09-22 14:49:46,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:46,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,738 INFO L87 Difference]: Start difference. First operand 142 states and 317 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,769 INFO L93 Difference]: Finished difference Result 135 states and 276 transitions. [2021-09-22 14:49:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:49:46,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-09-22 14:49:46,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,771 INFO L225 Difference]: With dead ends: 135 [2021-09-22 14:49:46,771 INFO L226 Difference]: Without dead ends: 107 [2021-09-22 14:49:46,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:49:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-09-22 14:49:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-09-22 14:49:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 106 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) [2021-09-22 14:49:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 216 transitions. [2021-09-22 14:49:46,774 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 216 transitions. Word has length 14 [2021-09-22 14:49:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,775 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 216 transitions. [2021-09-22 14:49:46,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 216 transitions. [2021-09-22 14:49:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-09-22 14:49:46,776 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:49:46,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,777 INFO L82 PathProgramCache]: Analyzing trace with hash 962243805, now seen corresponding path program 1 times [2021-09-22 14:49:46,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270693366] [2021-09-22 14:49:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270693366] [2021-09-22 14:49:46,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270693366] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-09-22 14:49:46,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647316316] [2021-09-22 14:49:46,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-09-22 14:49:46,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-09-22 14:49:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:49:46,877 INFO L87 Difference]: Start difference. First operand 107 states and 216 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2021-09-22 14:49:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:46,910 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2021-09-22 14:49:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:49:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 [2021-09-22 14:49:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:46,912 INFO L225 Difference]: With dead ends: 98 [2021-09-22 14:49:46,912 INFO L226 Difference]: Without dead ends: 57 [2021-09-22 14:49:46,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:49:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-09-22 14:49:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-09-22 14:49:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2021-09-22 14:49:46,915 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 16 [2021-09-22 14:49:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:46,916 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2021-09-22 14:49:46,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2021-09-22 14:49:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2021-09-22 14:49:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-09-22 14:49:46,918 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:46,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:46,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:49:46,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:46,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:46,925 INFO L82 PathProgramCache]: Analyzing trace with hash -789651995, now seen corresponding path program 1 times [2021-09-22 14:49:46,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:46,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302554674] [2021-09-22 14:49:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:46,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:46,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:46,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302554674] [2021-09-22 14:49:46,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302554674] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:46,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:46,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:49:46,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711588197] [2021-09-22 14:49:46,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:46,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:46,998 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:47,024 INFO L93 Difference]: Finished difference Result 56 states and 104 transitions. [2021-09-22 14:49:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:49:47,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-09-22 14:49:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:47,025 INFO L225 Difference]: With dead ends: 56 [2021-09-22 14:49:47,025 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:49:47,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:49:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:49:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:49:47,026 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) [2021-09-22 14:49:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:49:47,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-09-22 14:49:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:47,027 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:49:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:49:47,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:49:47,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:49:47,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:49:47,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:49:47,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-09-22 14:49:47,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:49:47,033 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:49:47,033 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:49:47,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:49:47 BasicIcfg [2021-09-22 14:49:47,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:49:47,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:49:47,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:49:47,036 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:49:47,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:43" (3/4) ... [2021-09-22 14:49:47,038 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:49:47,043 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:49:47,043 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:49:47,044 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-09-22 14:49:47,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-09-22 14:49:47,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:49:47,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:49:47,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:49:47,081 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:49:47,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:49:47,083 INFO L168 Benchmark]: Toolchain (without parser) took 4884.67 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 38.6 MB in the beginning and 50.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,083 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:49:47,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.41 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 34.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.08 ms. Allocated memory is still 60.8 MB. Free memory was 34.6 MB in the beginning and 32.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,084 INFO L168 Benchmark]: Boogie Preprocessor took 48.06 ms. Allocated memory is still 60.8 MB. Free memory was 32.8 MB in the beginning and 31.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:49:47,084 INFO L168 Benchmark]: RCFGBuilder took 375.02 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 31.2 MB in the beginning and 53.4 MB in the end (delta: -22.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,085 INFO L168 Benchmark]: TraceAbstraction took 3887.55 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 53.2 MB in the end (delta: -432.3 kB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,085 INFO L168 Benchmark]: Witness Printer took 46.07 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 50.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:47,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 467.41 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 34.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.08 ms. Allocated memory is still 60.8 MB. Free memory was 34.6 MB in the beginning and 32.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.06 ms. Allocated memory is still 60.8 MB. Free memory was 32.8 MB in the beginning and 31.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.02 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 31.2 MB in the beginning and 53.4 MB in the end (delta: -22.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3887.55 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 53.2 MB in the end (delta: -432.3 kB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Witness Printer took 46.07 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 50.2 MB in the end (delta: 2.9 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: 2530.6ms, 92 PlacesBefore, 32 PlacesAfterwards, 84 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2794 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1857, positive: 1773, positive conditional: 0, positive unconditional: 1773, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1080, positive: 1046, positive conditional: 0, positive unconditional: 1046, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1080, positive: 1040, positive conditional: 0, positive unconditional: 1040, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1857, positive: 727, positive conditional: 0, positive unconditional: 727, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 1080, unknown conditional: 0, unknown unconditional: 1080] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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: 18]: 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3787.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 21.1ms, AutomataDifference: 299.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2581.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 169 SDtfs, 220 SDslu, 273 SDs, 0 SdLazy, 115 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 108.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 52 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.6ms SsaConstructionTime, 158.7ms SatisfiabilityAnalysisTime, 437.4ms InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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! [2021-09-22 14:49:47,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...