./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.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 16b41d7352a3e7bca6c65d29839f35cd9a045339e5497acb7d0d6bf7ecef2ad7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:27:52,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:27:52,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:27:52,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:27:52,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:27:52,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:27:52,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:27:52,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:27:52,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:27:52,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:27:52,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:27:52,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:27:52,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:27:52,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:27:52,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:27:52,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:27:52,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:27:52,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:27:52,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:27:52,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:27:52,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:27:52,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:27:52,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:27:52,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:27:52,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:27:52,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:27:52,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:27:52,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:27:52,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:27:52,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:27:52,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:27:52,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:27:52,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:27:52,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:27:52,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:27:52,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:27:52,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:27:52,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:27:52,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:27:52,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:27:52,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:27:52,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:27:52,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:27:52,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:27:52,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:27:52,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:27:52,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:27:52,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:27:52,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:27:52,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:27:52,866 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:27:52,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:27:52,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:27:52,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:27:52,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:27:52,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:27:52,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:27:52,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:27:52,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:27:52,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:27:52,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:27:52,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:27:52,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:27:52,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:27:52,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:27:52,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:27:52,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:27:52,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:27:52,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:27:52,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:27:52,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:27:52,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b41d7352a3e7bca6c65d29839f35cd9a045339e5497acb7d0d6bf7ecef2ad7 [2021-12-17 22:27:53,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:27:53,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:27:53,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:27:53,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:27:53,162 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:27:53,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2021-12-17 22:27:53,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49cf2708/898bf638903e41a9abe88d2b7c59f799/FLAG92d793025 [2021-12-17 22:27:53,630 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:27:53,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2021-12-17 22:27:53,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49cf2708/898bf638903e41a9abe88d2b7c59f799/FLAG92d793025 [2021-12-17 22:27:53,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49cf2708/898bf638903e41a9abe88d2b7c59f799 [2021-12-17 22:27:53,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:27:53,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:27:53,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:27:53,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:27:53,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:27:53,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:27:53" (1/1) ... [2021-12-17 22:27:53,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b5347d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:53, skipping insertion in model container [2021-12-17 22:27:53,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:27:53" (1/1) ... [2021-12-17 22:27:53,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:27:53,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:27:53,828 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] [2021-12-17 22:27:53,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:27:53,960 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:27:53,970 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] [2021-12-17 22:27:54,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:27:54,053 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:27:54,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54 WrapperNode [2021-12-17 22:27:54,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:27:54,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:27:54,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:27:54,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:27:54,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,111 INFO L137 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2021-12-17 22:27:54,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:27:54,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:27:54,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:27:54,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:27:54,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:27:54,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:27:54,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:27:54,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:27:54,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (1/1) ... [2021-12-17 22:27:54,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:27:54,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:27:54,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 22:27:54,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 22:27:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:27:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:27:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-17 22:27:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:27:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:27:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-17 22:27:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-17 22:27:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:27:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:27:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:27:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:27:54,290 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:27:54,407 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:27:54,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:27:54,539 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:27:54,543 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:27:54,543 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:27:54,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:27:54 BoogieIcfgContainer [2021-12-17 22:27:54,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:27:54,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:27:54,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:27:54,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:27:54,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:27:53" (1/3) ... [2021-12-17 22:27:54,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408b83cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:27:54, skipping insertion in model container [2021-12-17 22:27:54,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:27:54" (2/3) ... [2021-12-17 22:27:54,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408b83cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:27:54, skipping insertion in model container [2021-12-17 22:27:54,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:27:54" (3/3) ... [2021-12-17 22:27:54,550 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_31-traces-mine-vs-mutex_true.i [2021-12-17 22:27:54,553 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:27:54,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:27:54,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:27:54,553 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:27:54,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,568 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,568 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,573 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,574 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,583 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,584 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:27:54,587 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-12-17 22:27:54,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:27:54,632 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:27:54,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 22:27:54,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 170 flow [2021-12-17 22:27:54,686 INFO L129 PetriNetUnfolder]: 1/80 cut-off events. [2021-12-17 22:27:54,686 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:27:54,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 1/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2021-12-17 22:27:54,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 81 transitions, 170 flow [2021-12-17 22:27:54,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 65 transitions, 133 flow [2021-12-17 22:27:54,720 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-12-17 22:27:54,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:27:54,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:27:54,722 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:27:54,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:27:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:27:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1972094872, now seen corresponding path program 1 times [2021-12-17 22:27:54,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:27:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128043510] [2021-12-17 22:27:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:27:54,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:27:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:27:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:27:55,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:27:55,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128043510] [2021-12-17 22:27:55,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128043510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:27:55,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:27:55,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:27:55,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750969342] [2021-12-17 22:27:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:27:55,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:27:55,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:27:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:27:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:27:55,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-12-17 22:27:55,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:27:55,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-12-17 22:27:55,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:27:55,147 INFO L129 PetriNetUnfolder]: 17/139 cut-off events. [2021-12-17 22:27:55,147 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:27:55,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 139 events. 17/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 8 based on Foata normal form. 5/143 useless extension candidates. Maximal degree in co-relation 155. Up to 24 conditions per place. [2021-12-17 22:27:55,149 INFO L132 encePairwiseOnDemand]: 76/81 looper letters, 8 selfloop transitions, 2 changer transitions 13/78 dead transitions. [2021-12-17 22:27:55,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 78 transitions, 205 flow [2021-12-17 22:27:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:27:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:27:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2021-12-17 22:27:55,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8712522045855379 [2021-12-17 22:27:55,163 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2021-12-17 22:27:55,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2021-12-17 22:27:55,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:27:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2021-12-17 22:27:55,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,185 INFO L186 Difference]: Start difference. First operand has 69 places, 65 transitions, 133 flow. Second operand 7 states and 494 transitions. [2021-12-17 22:27:55,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 78 transitions, 205 flow [2021-12-17 22:27:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 78 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:27:55,203 INFO L242 Difference]: Finished difference. Result has 79 places, 65 transitions, 148 flow [2021-12-17 22:27:55,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2021-12-17 22:27:55,211 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2021-12-17 22:27:55,211 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 148 flow [2021-12-17 22:27:55,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:27:55,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:27:55,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:27:55,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:27:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:27:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1681565644, now seen corresponding path program 1 times [2021-12-17 22:27:55,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:27:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171760614] [2021-12-17 22:27:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:27:55,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:27:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:27:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:27:55,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:27:55,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171760614] [2021-12-17 22:27:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171760614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:27:55,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:27:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:27:55,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352609187] [2021-12-17 22:27:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:27:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:27:55,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:27:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:27:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:27:55,327 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 81 [2021-12-17 22:27:55,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:27:55,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 81 [2021-12-17 22:27:55,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:27:55,402 INFO L129 PetriNetUnfolder]: 13/149 cut-off events. [2021-12-17 22:27:55,402 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-17 22:27:55,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 149 events. 13/149 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 335 event pairs, 8 based on Foata normal form. 8/157 useless extension candidates. Maximal degree in co-relation 213. Up to 33 conditions per place. [2021-12-17 22:27:55,403 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 13 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2021-12-17 22:27:55,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 198 flow [2021-12-17 22:27:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:27:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:27:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2021-12-17 22:27:55,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.831275720164609 [2021-12-17 22:27:55,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2021-12-17 22:27:55,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2021-12-17 22:27:55,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:27:55,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2021-12-17 22:27:55,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,407 INFO L186 Difference]: Start difference. First operand has 79 places, 65 transitions, 148 flow. Second operand 3 states and 202 transitions. [2021-12-17 22:27:55,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 198 flow [2021-12-17 22:27:55,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 186 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-12-17 22:27:55,410 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 168 flow [2021-12-17 22:27:55,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2021-12-17 22:27:55,411 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2021-12-17 22:27:55,411 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 168 flow [2021-12-17 22:27:55,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:27:55,412 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:27:55,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:27:55,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:27:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:27:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1672303611, now seen corresponding path program 1 times [2021-12-17 22:27:55,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:27:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415110586] [2021-12-17 22:27:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:27:55,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:27:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:27:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:27:55,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:27:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415110586] [2021-12-17 22:27:55,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415110586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:27:55,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:27:55,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:27:55,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995990920] [2021-12-17 22:27:55,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:27:55,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:27:55,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:27:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:27:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:27:55,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2021-12-17 22:27:55,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:27:55,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2021-12-17 22:27:55,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:27:55,608 INFO L129 PetriNetUnfolder]: 6/104 cut-off events. [2021-12-17 22:27:55,609 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-12-17 22:27:55,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 104 events. 6/104 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 1 based on Foata normal form. 7/111 useless extension candidates. Maximal degree in co-relation 138. Up to 21 conditions per place. [2021-12-17 22:27:55,609 INFO L132 encePairwiseOnDemand]: 76/81 looper letters, 21 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2021-12-17 22:27:55,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 232 flow [2021-12-17 22:27:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:27:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:27:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2021-12-17 22:27:55,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2021-12-17 22:27:55,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 292 transitions. [2021-12-17 22:27:55,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 292 transitions. [2021-12-17 22:27:55,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:27:55,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 292 transitions. [2021-12-17 22:27:55,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,614 INFO L186 Difference]: Start difference. First operand has 72 places, 67 transitions, 168 flow. Second operand 5 states and 292 transitions. [2021-12-17 22:27:55,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 232 flow [2021-12-17 22:27:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:27:55,616 INFO L242 Difference]: Finished difference. Result has 75 places, 67 transitions, 172 flow [2021-12-17 22:27:55,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2021-12-17 22:27:55,617 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2021-12-17 22:27:55,617 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 172 flow [2021-12-17 22:27:55,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:27:55,618 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:27:55,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:27:55,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:27:55,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:27:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash 551900832, now seen corresponding path program 1 times [2021-12-17 22:27:55,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:27:55,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272792192] [2021-12-17 22:27:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:27:55,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:27:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:27:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:27:55,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:27:55,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272792192] [2021-12-17 22:27:55,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272792192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:27:55,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:27:55,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:27:55,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307590871] [2021-12-17 22:27:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:27:55,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:27:55,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:27:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:27:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:27:55,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2021-12-17 22:27:55,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:27:55,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2021-12-17 22:27:55,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:27:55,763 INFO L129 PetriNetUnfolder]: 4/96 cut-off events. [2021-12-17 22:27:55,763 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:27:55,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 96 events. 4/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 3 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 110. Up to 13 conditions per place. [2021-12-17 22:27:55,764 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2021-12-17 22:27:55,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 190 flow [2021-12-17 22:27:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:27:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:27:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2021-12-17 22:27:55,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2021-12-17 22:27:55,766 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2021-12-17 22:27:55,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2021-12-17 22:27:55,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:27:55,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2021-12-17 22:27:55,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,769 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,769 INFO L186 Difference]: Start difference. First operand has 75 places, 67 transitions, 172 flow. Second operand 10 states and 662 transitions. [2021-12-17 22:27:55,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 190 flow [2021-12-17 22:27:55,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 183 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-17 22:27:55,771 INFO L242 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2021-12-17 22:27:55,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2021-12-17 22:27:55,771 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2021-12-17 22:27:55,772 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2021-12-17 22:27:55,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:27:55,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-17 22:27:55,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-12-17 22:27:55,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:27:55,777 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-17 22:27:55,778 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:27:55,778 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:27:55,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:27:55 BasicIcfg [2021-12-17 22:27:55,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:27:55,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:27:55,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:27:55,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:27:55,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:27:54" (3/4) ... [2021-12-17 22:27:55,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:27:55,787 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-17 22:27:55,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 22:27:55,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:27:55,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:27:55,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:27:55,809 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:27:55,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:27:55,810 INFO L158 Benchmark]: Toolchain (without parser) took 2158.82ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 46.2MB in the beginning and 58.6MB in the end (delta: -12.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-12-17 22:27:55,810 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:27:55,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.72ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 46.0MB in the beginning and 63.7MB in the end (delta: -17.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 22:27:55,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.19ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 61.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:27:55,811 INFO L158 Benchmark]: Boogie Preprocessor took 43.20ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 60.6MB in the end (delta: 950.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:27:55,811 INFO L158 Benchmark]: RCFGBuilder took 388.79ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 48.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 22:27:55,812 INFO L158 Benchmark]: TraceAbstraction took 1234.82ms. Allocated memory is still 96.5MB. Free memory was 47.4MB in the beginning and 61.5MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:27:55,812 INFO L158 Benchmark]: Witness Printer took 28.81ms. Allocated memory is still 96.5MB. Free memory was 61.5MB in the beginning and 58.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:27:55,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.72ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 46.0MB in the beginning and 63.7MB in the end (delta: -17.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.19ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 61.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.20ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 60.6MB in the end (delta: 950.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 388.79ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 48.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1234.82ms. Allocated memory is still 96.5MB. Free memory was 47.4MB in the beginning and 61.5MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.81ms. Allocated memory is still 96.5MB. Free memory was 61.5MB in the beginning and 58.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 3 procedures, 101 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 32 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-12-17 22:27:55,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE