./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/safe036_rmo.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 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/safe036_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 16:01:28,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 16:01:28,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 16:01:28,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 16:01:28,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 16:01:28,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 16:01:28,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 16:01:28,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 16:01:28,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 16:01:28,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 16:01:28,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 16:01:28,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 16:01:28,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 16:01:28,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 16:01:28,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 16:01:28,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 16:01:28,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 16:01:28,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 16:01:28,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 16:01:28,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 16:01:28,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 16:01:28,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 16:01:28,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 16:01:28,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 16:01:28,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 16:01:28,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 16:01:28,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 16:01:28,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 16:01:28,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 16:01:28,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 16:01:28,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 16:01:28,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 16:01:28,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 16:01:28,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 16:01:28,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 16:01:28,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 16:01:28,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 16:01:28,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 16:01:28,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 16:01:28,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 16:01:28,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 16:01:28,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 16:01:28,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 16:01:28,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 16:01:28,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 16:01:28,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 16:01:28,173 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 16:01:28,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 16:01:28,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 16:01:28,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 16:01:28,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 16:01:28,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 16:01:28,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 16:01:28,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 16:01:28,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 16:01:28,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 16:01:28,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 16:01:28,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 16:01:28,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 16:01:28,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 16:01:28,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 16:01:28,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 16:01:28,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:01:28,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 16:01:28,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 16:01:28,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 16:01:28,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 16:01:28,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 16:01:28,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 16:01:28,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 16:01:28,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e [2021-07-05 16:01:28,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 16:01:28,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 16:01:28,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 16:01:28,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 16:01:28,527 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 16:01:28,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-07-05 16:01:28,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fcddd2f/66abc50ef9c94f0093ff28b731beaad3/FLAG2c39f25ca [2021-07-05 16:01:29,031 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 16:01:29,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-07-05 16:01:29,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fcddd2f/66abc50ef9c94f0093ff28b731beaad3/FLAG2c39f25ca [2021-07-05 16:01:29,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fcddd2f/66abc50ef9c94f0093ff28b731beaad3 [2021-07-05 16:01:29,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 16:01:29,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 16:01:29,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 16:01:29,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 16:01:29,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 16:01:29,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff0ac6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29, skipping insertion in model container [2021-07-05 16:01:29,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 16:01:29,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 16:01:29,327 WARN L224 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/safe036_rmo.opt.i[949,962] [2021-07-05 16:01:29,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:01:29,504 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 16:01:29,515 WARN L224 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/safe036_rmo.opt.i[949,962] [2021-07-05 16:01:29,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:01:29,625 INFO L208 MainTranslator]: Completed translation [2021-07-05 16:01:29,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29 WrapperNode [2021-07-05 16:01:29,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 16:01:29,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 16:01:29,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 16:01:29,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 16:01:29,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 16:01:29,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 16:01:29,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 16:01:29,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 16:01:29,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 16:01:29,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 16:01:29,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 16:01:29,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 16:01:29,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (1/1) ... [2021-07-05 16:01:29,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:01:29,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 16:01:29,755 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) [2021-07-05 16:01:29,772 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 [2021-07-05 16:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 16:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-05 16:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 16:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 16:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-05 16:01:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-05 16:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-05 16:01:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-05 16:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 16:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-05 16:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 16:01:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 16:01:29,812 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-05 16:01:30,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 16:01:30,188 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-05 16:01:30,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:01:30 BoogieIcfgContainer [2021-07-05 16:01:30,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 16:01:30,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 16:01:30,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 16:01:30,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 16:01:30,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 04:01:29" (1/3) ... [2021-07-05 16:01:30,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8b954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:01:30, skipping insertion in model container [2021-07-05 16:01:30,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:29" (2/3) ... [2021-07-05 16:01:30,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8b954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:01:30, skipping insertion in model container [2021-07-05 16:01:30,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:01:30" (3/3) ... [2021-07-05 16:01:30,197 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.opt.i [2021-07-05 16:01:30,204 WARN L144 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-05 16:01:30,204 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 16:01:30,205 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 16:01:30,205 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-05 16:01:30,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,245 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:30,257 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-05 16:01:30,301 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 16:01:30,308 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:01:30,308 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:01:30,323 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:01:30,332 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:30,335 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:30,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:30,389 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-07-05 16:01:30,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 16:01:30,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-07-05 16:01:30,396 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-07-05 16:01:32,564 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-07-05 16:01:32,863 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-07-05 16:01:33,038 INFO L131 LiptonReduction]: Checked pairs total: 1456 [2021-07-05 16:01:33,038 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-07-05 16:01:33,044 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2021-07-05 16:01:33,054 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 73 states have internal predecessors, (176), 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) [2021-07-05 16:01:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 73 states have internal predecessors, (176), 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) [2021-07-05 16:01:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 16:01:33,059 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:33,060 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 16:01:33,060 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1340524455, now seen corresponding path program 1 times [2021-07-05 16:01:33,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:01:33,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989807255] [2021-07-05 16:01:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:33,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:01:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:33,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:33,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 16:01:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:33,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:01:33,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989807255] [2021-07-05 16:01:33,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989807255] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:33,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:33,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 16:01:33,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650106312] [2021-07-05 16:01:33,342 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 16:01:33,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:01:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 16:01:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 16:01:33,359 INFO L87 Difference]: Start difference. First operand has 74 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 73 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:33,409 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-07-05 16:01:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 16:01:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 16:01:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:33,417 INFO L225 Difference]: With dead ends: 63 [2021-07-05 16:01:33,418 INFO L226 Difference]: Without dead ends: 40 [2021-07-05 16:01:33,419 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 16:01:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-07-05 16:01:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-07-05 16:01:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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) [2021-07-05 16:01:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2021-07-05 16:01:33,454 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2021-07-05 16:01:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:33,456 INFO L442 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2021-07-05 16:01:33,458 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2021-07-05 16:01:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 16:01:33,460 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:33,460 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 16:01:33,461 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 16:01:33,461 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1814883214, now seen corresponding path program 1 times [2021-07-05 16:01:33,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:01:33,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764530457] [2021-07-05 16:01:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:33,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:01:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:33,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:33,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:33,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 16:01:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:33,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:01:33,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764530457] [2021-07-05 16:01:33,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764530457] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:33,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:33,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 16:01:33,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841726184] [2021-07-05 16:01:33,568 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 16:01:33,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:01:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 16:01:33,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-05 16:01:33,568 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-07-05 16:01:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:33,593 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2021-07-05 16:01:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 16:01:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-07-05 16:01:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:33,594 INFO L225 Difference]: With dead ends: 35 [2021-07-05 16:01:33,594 INFO L226 Difference]: Without dead ends: 28 [2021-07-05 16:01:33,595 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-05 16:01:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-07-05 16:01:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-07-05 16:01:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 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) [2021-07-05 16:01:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2021-07-05 16:01:33,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2021-07-05 16:01:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:33,598 INFO L442 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-07-05 16:01:33,598 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-07-05 16:01:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2021-07-05 16:01:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-05 16:01:33,599 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:33,599 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 16:01:33,599 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 16:01:33,599 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:33,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2113625342, now seen corresponding path program 1 times [2021-07-05 16:01:33,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:01:33,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855186318] [2021-07-05 16:01:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:33,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:01:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:33,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:33,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:33,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:33,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:01:33,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855186318] [2021-07-05 16:01:33,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855186318] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:33,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:33,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 16:01:33,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63886467] [2021-07-05 16:01:33,671 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 16:01:33,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:01:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 16:01:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 16:01:33,672 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-05 16:01:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:33,684 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-07-05 16:01:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 16:01:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-07-05 16:01:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:33,685 INFO L225 Difference]: With dead ends: 35 [2021-07-05 16:01:33,686 INFO L226 Difference]: Without dead ends: 16 [2021-07-05 16:01:33,686 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 16:01:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-07-05 16:01:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-07-05 16:01:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2021-07-05 16:01:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-07-05 16:01:33,688 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-07-05 16:01:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:33,688 INFO L442 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-07-05 16:01:33,689 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-05 16:01:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-07-05 16:01:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-05 16:01:33,689 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:33,689 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 16:01:33,690 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 16:01:33,690 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:33,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1674848218, now seen corresponding path program 2 times [2021-07-05 16:01:33,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:01:33,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913290339] [2021-07-05 16:01:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:33,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:01:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:33,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:33,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:33,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:33,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 16:01:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:33,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:01:33,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913290339] [2021-07-05 16:01:33,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913290339] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:33,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:33,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 16:01:33,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845730874] [2021-07-05 16:01:33,778 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 16:01:33,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:01:33,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 16:01:33,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 16:01:33,780 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-05 16:01:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:33,803 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-07-05 16:01:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 16:01:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-07-05 16:01:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:33,805 INFO L225 Difference]: With dead ends: 15 [2021-07-05 16:01:33,805 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 16:01:33,805 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 16:01:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 16:01:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 16:01:33,807 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) [2021-07-05 16:01:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 16:01:33,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-05 16:01:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:33,808 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 16:01:33,808 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-05 16:01:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 16:01:33,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:01:33,811 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-05 16:01:33,811 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 16:01:33,813 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/3) [2021-07-05 16:01:33,816 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATION ======== [2021-07-05 16:01:33,822 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:01:33,822 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:01:33,826 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:01:33,827 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:33,827 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:33,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-07-05 16:01:33,836 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-07-05 16:01:33,836 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 16:01:33,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-07-05 16:01:33,837 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-07-05 16:01:35,838 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-07-05 16:01:36,024 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-07-05 16:01:36,109 INFO L131 LiptonReduction]: Checked pairs total: 1406 [2021-07-05 16:01:36,109 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-07-05 16:01:36,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-07-05 16:01:36,113 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:36,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:01:36,115 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-07-05 16:01:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:36,116 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.isCounterexampleFeasibleInternal(AbstractCegarLoop.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-05 16:01:36,118 INFO L168 Benchmark]: Toolchain (without parser) took 7047.41 ms. Allocated memory was 50.3 MB in the beginning and 142.6 MB in the end (delta: 92.3 MB). Free memory was 25.6 MB in the beginning and 106.0 MB in the end (delta: -80.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,119 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 16:01:36,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.06 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 42.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.80 ms. Allocated memory is still 65.0 MB. Free memory was 42.2 MB in the beginning and 40.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,120 INFO L168 Benchmark]: Boogie Preprocessor took 42.16 ms. Allocated memory is still 65.0 MB. Free memory was 40.2 MB in the beginning and 38.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,120 INFO L168 Benchmark]: RCFGBuilder took 460.81 ms. Allocated memory is still 65.0 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,121 INFO L168 Benchmark]: TraceAbstraction took 5926.10 ms. Allocated memory was 65.0 MB in the beginning and 142.6 MB in the end (delta: 77.6 MB). Free memory was 36.2 MB in the beginning and 106.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:36,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.06 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 42.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.80 ms. Allocated memory is still 65.0 MB. Free memory was 42.2 MB in the beginning and 40.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.16 ms. Allocated memory is still 65.0 MB. Free memory was 40.2 MB in the beginning and 38.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 460.81 ms. Allocated memory is still 65.0 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5926.10 ms. Allocated memory was 65.0 MB in the beginning and 142.6 MB in the end (delta: 77.6 MB). Free memory was 36.2 MB in the beginning and 106.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2703.8ms, 72 PlacesBefore, 22 PlacesAfterwards, 67 TransitionsBefore, 16 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 1456 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 842, positive: 767, positive conditional: 0, positive unconditional: 767, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 540, positive: 508, positive conditional: 0, positive unconditional: 508, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 540, positive: 506, positive conditional: 0, positive unconditional: 506, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 163, negative conditional: 0, negative unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 842, positive: 259, positive conditional: 0, positive unconditional: 259, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 540, unknown conditional: 0, unknown unconditional: 540] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2282.3ms, 72 PlacesBefore, 22 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 829, positive: 760, positive conditional: 0, positive unconditional: 760, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 535, positive: 505, positive conditional: 0, positive unconditional: 505, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 535, positive: 503, positive conditional: 0, positive unconditional: 503, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 158, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 151, negative conditional: 0, negative unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 829, positive: 255, positive conditional: 0, positive unconditional: 255, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 535, unknown conditional: 0, unknown unconditional: 535] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-07-05 16:01:36,183 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 16:01:38,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 16:01:38,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 16:01:38,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 16:01:38,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 16:01:38,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 16:01:38,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 16:01:38,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 16:01:38,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 16:01:38,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 16:01:38,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 16:01:38,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 16:01:38,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 16:01:38,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 16:01:38,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 16:01:38,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 16:01:38,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 16:01:38,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 16:01:38,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 16:01:38,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 16:01:38,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 16:01:38,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 16:01:38,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 16:01:38,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 16:01:38,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 16:01:38,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 16:01:38,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 16:01:38,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 16:01:38,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 16:01:38,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 16:01:38,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 16:01:38,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 16:01:38,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 16:01:38,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 16:01:38,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 16:01:38,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 16:01:38,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 16:01:38,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 16:01:38,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 16:01:38,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 16:01:38,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 16:01:38,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-07-05 16:01:38,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 16:01:38,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 16:01:38,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 16:01:38,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 16:01:38,326 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 16:01:38,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 16:01:38,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 16:01:38,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 16:01:38,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 16:01:38,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 16:01:38,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 16:01:38,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 16:01:38,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-07-05 16:01:38,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-07-05 16:01:38,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 16:01:38,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 16:01:38,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 16:01:38,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 16:01:38,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 16:01:38,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 16:01:38,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 16:01:38,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:01:38,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 16:01:38,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 16:01:38,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 16:01:38,331 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-07-05 16:01:38,331 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-07-05 16:01:38,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 16:01:38,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 16:01:38,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-05 16:01:38,332 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e [2021-07-05 16:01:38,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 16:01:38,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 16:01:38,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 16:01:38,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 16:01:38,717 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 16:01:38,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-07-05 16:01:38,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4f31cb7/0995e93e9ea34fd3b829c552b29d3a63/FLAG1d76f42d2 [2021-07-05 16:01:39,324 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 16:01:39,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-07-05 16:01:39,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4f31cb7/0995e93e9ea34fd3b829c552b29d3a63/FLAG1d76f42d2 [2021-07-05 16:01:39,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4f31cb7/0995e93e9ea34fd3b829c552b29d3a63 [2021-07-05 16:01:39,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 16:01:39,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 16:01:39,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 16:01:39,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 16:01:39,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 16:01:39,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:01:39" (1/1) ... [2021-07-05 16:01:39,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ab5329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:39, skipping insertion in model container [2021-07-05 16:01:39,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:01:39" (1/1) ... [2021-07-05 16:01:39,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 16:01:39,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 16:01:39,981 WARN L224 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/safe036_rmo.opt.i[949,962] [2021-07-05 16:01:40,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:01:40,213 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 16:01:40,230 WARN L224 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/safe036_rmo.opt.i[949,962] [2021-07-05 16:01:40,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:01:40,339 INFO L208 MainTranslator]: Completed translation [2021-07-05 16:01:40,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40 WrapperNode [2021-07-05 16:01:40,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 16:01:40,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 16:01:40,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 16:01:40,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 16:01:40,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 16:01:40,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 16:01:40,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 16:01:40,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 16:01:40,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 16:01:40,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 16:01:40,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 16:01:40,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 16:01:40,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (1/1) ... [2021-07-05 16:01:40,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:01:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 16:01:40,482 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) [2021-07-05 16:01:40,497 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 [2021-07-05 16:01:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-05 16:01:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 16:01:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 16:01:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-07-05 16:01:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-07-05 16:01:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-05 16:01:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-05 16:01:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-05 16:01:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-05 16:01:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-05 16:01:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 16:01:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 16:01:40,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-05 16:01:40,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 16:01:40,889 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-05 16:01:40,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:01:40 BoogieIcfgContainer [2021-07-05 16:01:40,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 16:01:40,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 16:01:40,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 16:01:40,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 16:01:40,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 04:01:39" (1/3) ... [2021-07-05 16:01:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790a6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:01:40, skipping insertion in model container [2021-07-05 16:01:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:01:40" (2/3) ... [2021-07-05 16:01:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790a6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:01:40, skipping insertion in model container [2021-07-05 16:01:40,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:01:40" (3/3) ... [2021-07-05 16:01:40,899 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.opt.i [2021-07-05 16:01:40,904 WARN L144 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-05 16:01:40,905 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 16:01:40,905 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 16:01:40,905 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-05 16:01:40,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,943 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,944 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,944 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,947 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,947 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,952 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,952 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,961 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:01:40,965 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-05 16:01:40,996 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 16:01:41,002 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:01:41,002 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:01:41,013 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:01:41,021 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:41,024 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:41,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:41,079 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2021-07-05 16:01:41,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 16:01:41,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-07-05 16:01:41,086 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-07-05 16:01:44,107 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-07-05 16:01:44,257 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-07-05 16:01:44,471 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-07-05 16:01:44,664 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-07-05 16:01:44,926 INFO L131 LiptonReduction]: Checked pairs total: 1340 [2021-07-05 16:01:44,927 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-07-05 16:01:44,934 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-07-05 16:01:44,941 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 16:01:44,947 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:44,948 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 16:01:44,948 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1281327968, now seen corresponding path program 1 times [2021-07-05 16:01:44,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-05 16:01:44,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20170278] [2021-07-05 16:01:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:44,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-05 16:01:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-05 16:01:44,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-05 16:01:44,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-07-05 16:01:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:45,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-05 16:01:45,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 16:01:45,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-05 16:01:45,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:45,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-07-05 16:01:45,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:45,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-05 16:01:45,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-05 16:01:45,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:45,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-05 16:01:45,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-05 16:01:45,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,208 INFO L428 QuantifierPusher]: Applying distributivity to a ∨-2-2-2-1 term [2021-07-05 16:01:45,209 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-07-05 16:01:45,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 16:01:45,243 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:45,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-07-05 16:01:45,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20170278] [2021-07-05 16:01:45,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20170278] provided 2 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:45,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:45,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-07-05 16:01:45,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243388450] [2021-07-05 16:01:45,291 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 16:01:45,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-07-05 16:01:45,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 16:01:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-05 16:01:45,311 INFO L87 Difference]: Start difference. First operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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 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) [2021-07-05 16:01:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:45,389 INFO L93 Difference]: Finished difference Result 45 states and 82 transitions. [2021-07-05 16:01:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-05 16:01:45,391 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 6 [2021-07-05 16:01:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:45,397 INFO L225 Difference]: With dead ends: 45 [2021-07-05 16:01:45,397 INFO L226 Difference]: Without dead ends: 28 [2021-07-05 16:01:45,398 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-05 16:01:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-07-05 16:01:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-07-05 16:01:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 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) [2021-07-05 16:01:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2021-07-05 16:01:45,421 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 6 [2021-07-05 16:01:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:45,421 INFO L442 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-07-05 16:01:45,422 INFO L443 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) [2021-07-05 16:01:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2021-07-05 16:01:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-05 16:01:45,422 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:45,422 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 16:01:45,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-07-05 16:01:45,623 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-05 16:01:45,625 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1324151756, now seen corresponding path program 1 times [2021-07-05 16:01:45,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-05 16:01:45,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782023541] [2021-07-05 16:01:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:01:45,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-05 16:01:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-05 16:01:45,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-05 16:01:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-07-05 16:01:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:01:45,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-05 16:01:45,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 16:01:45,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 16:01:45,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:45,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-07-05 16:01:45,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:45,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 16:01:45,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-05 16:01:45,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:45,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 16:01:45,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-05 16:01:45,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:45,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 16:01:45,775 INFO L428 QuantifierPusher]: Applying distributivity to a ∨-2-2-2-1 term [2021-07-05 16:01:45,775 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-07-05 16:01:45,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 16:01:45,780 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:45,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-07-05 16:01:45,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:45,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:45,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-07-05 16:01:45,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782023541] [2021-07-05 16:01:45,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782023541] provided 2 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:45,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:45,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-07-05 16:01:45,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355327505] [2021-07-05 16:01:45,833 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-05 16:01:45,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-07-05 16:01:45,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-05 16:01:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-05 16:01:45,835 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:45,877 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-07-05 16:01:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 16:01:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-05 16:01:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:45,878 INFO L225 Difference]: With dead ends: 35 [2021-07-05 16:01:45,879 INFO L226 Difference]: Without dead ends: 16 [2021-07-05 16:01:45,879 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-05 16:01:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-07-05 16:01:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-07-05 16:01:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2021-07-05 16:01:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-07-05 16:01:45,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-07-05 16:01:45,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:45,883 INFO L442 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-07-05 16:01:45,883 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-07-05 16:01:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-05 16:01:45,897 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:01:45,897 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 16:01:45,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-07-05 16:01:46,117 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-05 16:01:46,117 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:01:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash 649514260, now seen corresponding path program 2 times [2021-07-05 16:01:46,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-05 16:01:46,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022484574] [2021-07-05 16:01:46,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-07-05 16:01:46,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-05 16:01:46,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-05 16:01:46,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-05 16:01:46,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-07-05 16:01:46,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-07-05 16:01:46,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-05 16:01:46,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-05 16:01:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 16:01:46,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 16:01:46,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:01:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:46,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-07-05 16:01:46,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:46,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 16:01:46,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-05 16:01:46,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:46,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 16:01:46,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-05 16:01:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 16:01:46,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 16:01:46,251 INFO L428 QuantifierPusher]: Applying distributivity to a ∨-2-2-2-1 term [2021-07-05 16:01:46,251 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-07-05 16:01:46,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 16:01:46,253 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 16:01:46,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-07-05 16:01:46,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:01:46,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:01:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:01:46,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-07-05 16:01:46,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022484574] [2021-07-05 16:01:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022484574] provided 2 perfect and 0 imperfect interpolant sequences [2021-07-05 16:01:46,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:01:46,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-07-05 16:01:46,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941554373] [2021-07-05 16:01:46,316 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-05 16:01:46,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-07-05 16:01:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-05 16:01:46,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-05 16:01:46,320 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:01:46,351 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-07-05 16:01:46,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 16:01:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-05 16:01:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:01:46,352 INFO L225 Difference]: With dead ends: 15 [2021-07-05 16:01:46,352 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 16:01:46,353 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-05 16:01:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 16:01:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 16:01:46,353 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) [2021-07-05 16:01:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 16:01:46,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-05 16:01:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:01:46,354 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 16:01:46,354 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 16:01:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 16:01:46,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:01:46,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-07-05 16:01:46,562 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-05 16:01:46,563 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 16:01:46,565 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/3) [2021-07-05 16:01:46,567 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATION ======== [2021-07-05 16:01:46,568 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:01:46,568 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:01:46,569 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:01:46,570 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:46,570 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:46,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2021-07-05 16:01:46,578 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2021-07-05 16:01:46,579 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 16:01:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-07-05 16:01:46,580 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-07-05 16:01:49,402 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-07-05 16:01:49,555 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-07-05 16:01:49,721 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-07-05 16:01:49,880 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-07-05 16:01:50,177 INFO L131 LiptonReduction]: Checked pairs total: 1478 [2021-07-05 16:01:50,177 INFO L133 LiptonReduction]: Total number of compositions: 65 [2021-07-05 16:01:50,178 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-07-05 16:01:50,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-07-05 16:01:50,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:01:50,183 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-07-05 16:01:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:01:50,184 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.isCounterexampleFeasibleInternal(AbstractCegarLoop.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-05 16:01:50,186 INFO L168 Benchmark]: Toolchain (without parser) took 10406.13 ms. Allocated memory was 81.8 MB in the beginning and 159.4 MB in the end (delta: 77.6 MB). Free memory was 63.6 MB in the beginning and 130.2 MB in the end (delta: -66.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:50,186 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 81.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 16:01:50,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.88 ms. Allocated memory is still 81.8 MB. Free memory was 63.4 MB in the beginning and 42.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:50,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 81.8 MB. Free memory was 42.6 MB in the beginning and 40.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:50,187 INFO L168 Benchmark]: Boogie Preprocessor took 47.41 ms. Allocated memory is still 81.8 MB. Free memory was 40.6 MB in the beginning and 39.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:50,187 INFO L168 Benchmark]: RCFGBuilder took 438.49 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 45.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-07-05 16:01:50,187 INFO L168 Benchmark]: TraceAbstraction took 9293.83 ms. Allocated memory was 81.8 MB in the beginning and 159.4 MB in the end (delta: 77.6 MB). Free memory was 45.2 MB in the beginning and 130.2 MB in the end (delta: -85.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 16:01:50,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 81.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 560.88 ms. Allocated memory is still 81.8 MB. Free memory was 63.4 MB in the beginning and 42.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 81.8 MB. Free memory was 42.6 MB in the beginning and 40.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.41 ms. Allocated memory is still 81.8 MB. Free memory was 40.6 MB in the beginning and 39.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 438.49 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 45.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9293.83 ms. Allocated memory was 81.8 MB in the beginning and 159.4 MB in the end (delta: 77.6 MB). Free memory was 45.2 MB in the beginning and 130.2 MB in the end (delta: -85.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3902.9ms, 73 PlacesBefore, 22 PlacesAfterwards, 68 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1340 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 827, positive: 758, positive conditional: 0, positive unconditional: 758, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 538, positive: 513, positive conditional: 0, positive unconditional: 513, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 538, positive: 511, positive conditional: 0, positive unconditional: 511, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 173, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 827, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 538, unknown conditional: 0, unknown unconditional: 538] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3607.5ms, 73 PlacesBefore, 22 PlacesAfterwards, 68 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, 1478 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 979, positive: 903, positive conditional: 0, positive unconditional: 903, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 570, positive: 540, positive conditional: 0, positive unconditional: 540, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 570, positive: 538, positive conditional: 0, positive unconditional: 538, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 193, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 979, positive: 363, positive conditional: 0, positive unconditional: 363, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 570, unknown conditional: 0, unknown unconditional: 570] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-07-05 16:01:50,223 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...