./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer --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 72b5cfc065b99dee03c9feb5080303d7e06155db ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:29,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:29,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:29,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:29,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:29,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:29,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:29,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:29,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:29,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:29,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:29,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:29,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:29,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:29,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:29,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:29,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:29,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:29,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:29,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:29,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:29,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:29,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:29,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:29,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:29,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:29,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:29,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:29,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:29,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:29,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:29,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:29,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:29,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:29,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:29,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:29,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:29,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:29,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:29,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:29,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:29,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:29,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:29,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:29,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:29,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:29,908 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:29,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:29,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:29,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:29,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:29,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:29,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:29,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:29,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:29,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:29,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:29,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:29,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:29,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:29,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:29,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:29,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:29,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:29,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:29,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:29,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:29,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:29,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:29,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:29,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:29,914 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:/tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72b5cfc065b99dee03c9feb5080303d7e06155db [2020-11-28 02:57:30,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:30,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:30,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:30,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:30,278 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:30,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-11-28 02:57:30,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/data/1f97c8afb/bef654b47568498086e3acaa781f10e3/FLAGdc6820973 [2020-11-28 02:57:30,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:30,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-11-28 02:57:31,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/data/1f97c8afb/bef654b47568498086e3acaa781f10e3/FLAGdc6820973 [2020-11-28 02:57:31,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/data/1f97c8afb/bef654b47568498086e3acaa781f10e3 [2020-11-28 02:57:31,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:31,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:31,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:31,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:31,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4c3411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:31,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:31,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,732 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:31,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,897 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:31,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31 WrapperNode [2020-11-28 02:57:31,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:31,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:31,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:31,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:31,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:31,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:31,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:31,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:32,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:32,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:32,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:32,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:32,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:57:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:57:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:57:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:57:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:57:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:57:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:57:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:57:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:32,105 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:57:32,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:32,618 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:57:32,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32 BoogieIcfgContainer [2020-11-28 02:57:32,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:32,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:32,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:32,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:32,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:31" (1/3) ... [2020-11-28 02:57:32,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f988f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (2/3) ... [2020-11-28 02:57:32,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f988f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/3) ... [2020-11-28 02:57:32,632 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-11-28 02:57:32,640 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:57:32,640 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:32,643 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:32,644 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:57:32,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,710 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,710 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,710 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,710 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,715 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,715 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,720 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:57:32,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:57:32,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:32,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:32,769 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:32,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:32,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:32,770 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:32,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:32,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:32,781 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:57:32,783 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 02:57:32,786 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 02:57:32,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 02:57:32,851 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 02:57:32,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:57:32,855 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 02:57:32,858 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 02:57:35,342 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-28 02:57:35,951 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-11-28 02:57:35,951 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-28 02:57:35,957 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-28 02:57:35,997 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 02:57:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 02:57:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:57:36,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-11-28 02:57:36,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719591859] [2020-11-28 02:57:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719591859] [2020-11-28 02:57:36,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:36,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766868605] [2020-11-28 02:57:36,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,281 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 02:57:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,338 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-11-28 02:57:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 02:57:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,354 INFO L225 Difference]: With dead ends: 294 [2020-11-28 02:57:36,354 INFO L226 Difference]: Without dead ends: 230 [2020-11-28 02:57:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-28 02:57:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-28 02:57:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-28 02:57:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-11-28 02:57:36,415 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-11-28 02:57:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,415 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-11-28 02:57:36,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-11-28 02:57:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:36,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:36,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2017712009, now seen corresponding path program 1 times [2020-11-28 02:57:36,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186973637] [2020-11-28 02:57:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186973637] [2020-11-28 02:57:36,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:36,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866980825] [2020-11-28 02:57:36,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,525 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-11-28 02:57:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,569 INFO L93 Difference]: Finished difference Result 326 states and 861 transitions. [2020-11-28 02:57:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:57:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,577 INFO L225 Difference]: With dead ends: 326 [2020-11-28 02:57:36,577 INFO L226 Difference]: Without dead ends: 254 [2020-11-28 02:57:36,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-28 02:57:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-11-28 02:57:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 02:57:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2020-11-28 02:57:36,615 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 9 [2020-11-28 02:57:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,615 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2020-11-28 02:57:36,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2020-11-28 02:57:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:36,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:36,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739380, now seen corresponding path program 1 times [2020-11-28 02:57:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329504514] [2020-11-28 02:57:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329504514] [2020-11-28 02:57:36,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:36,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304989526] [2020-11-28 02:57:36,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,728 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand 3 states. [2020-11-28 02:57:36,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,750 INFO L93 Difference]: Finished difference Result 194 states and 494 transitions. [2020-11-28 02:57:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:57:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,755 INFO L225 Difference]: With dead ends: 194 [2020-11-28 02:57:36,755 INFO L226 Difference]: Without dead ends: 170 [2020-11-28 02:57:36,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-28 02:57:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-28 02:57:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-28 02:57:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 440 transitions. [2020-11-28 02:57:36,793 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 440 transitions. Word has length 9 [2020-11-28 02:57:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,793 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 440 transitions. [2020-11-28 02:57:36,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 440 transitions. [2020-11-28 02:57:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:36,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:36,795 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1991682187, now seen corresponding path program 1 times [2020-11-28 02:57:36,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479397095] [2020-11-28 02:57:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479397095] [2020-11-28 02:57:36,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:36,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8948968] [2020-11-28 02:57:36,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:36,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:36,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:36,861 INFO L87 Difference]: Start difference. First operand 170 states and 440 transitions. Second operand 4 states. [2020-11-28 02:57:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,891 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-11-28 02:57:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:36,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:57:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,893 INFO L225 Difference]: With dead ends: 218 [2020-11-28 02:57:36,893 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 02:57:36,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 02:57:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-28 02:57:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 02:57:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-28 02:57:36,904 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 11 [2020-11-28 02:57:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,904 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-28 02:57:36,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-28 02:57:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:36,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:36,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1991064667, now seen corresponding path program 2 times [2020-11-28 02:57:36,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198391025] [2020-11-28 02:57:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198391025] [2020-11-28 02:57:36,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726211889] [2020-11-28 02:57:36,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,977 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-28 02:57:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,993 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-28 02:57:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 02:57:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,995 INFO L225 Difference]: With dead ends: 144 [2020-11-28 02:57:36,995 INFO L226 Difference]: Without dead ends: 144 [2020-11-28 02:57:36,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-28 02:57:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-28 02:57:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 02:57:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-28 02:57:37,008 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-28 02:57:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,009 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-28 02:57:37,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-28 02:57:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:37,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:37,016 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 1 times [2020-11-28 02:57:37,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094463558] [2020-11-28 02:57:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094463558] [2020-11-28 02:57:37,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946539026] [2020-11-28 02:57:37,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,133 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-28 02:57:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,171 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-28 02:57:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:37,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:57:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,173 INFO L225 Difference]: With dead ends: 164 [2020-11-28 02:57:37,173 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 02:57:37,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 02:57:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-28 02:57:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-28 02:57:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-28 02:57:37,179 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-28 02:57:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,179 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-28 02:57:37,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-28 02:57:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:37,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:37,181 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1069248817, now seen corresponding path program 1 times [2020-11-28 02:57:37,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61815906] [2020-11-28 02:57:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61815906] [2020-11-28 02:57:37,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361534380] [2020-11-28 02:57:37,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:37,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:37,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:37,258 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-11-28 02:57:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,305 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-28 02:57:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:37,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 02:57:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,306 INFO L225 Difference]: With dead ends: 122 [2020-11-28 02:57:37,306 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 02:57:37,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 02:57:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 02:57:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 02:57:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-28 02:57:37,311 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-28 02:57:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,311 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-28 02:57:37,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-28 02:57:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:57:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:37,313 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-11-28 02:57:37,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201899309] [2020-11-28 02:57:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201899309] [2020-11-28 02:57:37,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588399763] [2020-11-28 02:57:37,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:37,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:37,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,340 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-11-28 02:57:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,349 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-28 02:57:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 02:57:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,351 INFO L225 Difference]: With dead ends: 115 [2020-11-28 02:57:37,351 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 02:57:37,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 02:57:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-28 02:57:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 02:57:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-28 02:57:37,355 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-28 02:57:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,356 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-28 02:57:37,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-28 02:57:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:37,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:57:37,357 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-11-28 02:57:37,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695877166] [2020-11-28 02:57:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695877166] [2020-11-28 02:57:37,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:37,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936084060] [2020-11-28 02:57:37,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:37,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:37,428 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-28 02:57:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,492 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-28 02:57:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:37,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 02:57:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,493 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:57:37,493 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:57:37,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:57:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 02:57:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-28 02:57:37,495 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-28 02:57:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,496 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-28 02:57:37,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-28 02:57:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:37,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:57:37,497 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-11-28 02:57:37,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096745929] [2020-11-28 02:57:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096745929] [2020-11-28 02:57:37,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201564211] [2020-11-28 02:57:37,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,564 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-28 02:57:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,579 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-28 02:57:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:37,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,580 INFO L225 Difference]: With dead ends: 35 [2020-11-28 02:57:37,580 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:37,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:37,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:57:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,581 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:37,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:37,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:37,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:57:37,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:37 BasicIcfg [2020-11-28 02:57:37,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:37,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:37,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:37,586 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:37,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/4) ... [2020-11-28 02:57:37,589 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:37,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:57:37,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:57:37,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:57:37,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:57:37,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:37,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:37,604 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:37,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ccacfaa0-7ff8-42e8-bfef-e6d4814a43f6/bin/uautomizer/witness.graphml [2020-11-28 02:57:37,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:37,658 INFO L168 Benchmark]: Toolchain (without parser) took 6434.33 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 62.3 MB in the beginning and 128.2 MB in the end (delta: -65.9 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,659 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:37,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 66.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.14 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,660 INFO L168 Benchmark]: Boogie Preprocessor took 44.81 ms. Allocated memory is still 111.1 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:37,661 INFO L168 Benchmark]: RCFGBuilder took 606.98 ms. Allocated memory is still 111.1 MB. Free memory was 63.0 MB in the beginning and 73.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,661 INFO L168 Benchmark]: TraceAbstraction took 4962.77 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 72.8 MB in the beginning and 131.3 MB in the end (delta: -58.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:37,662 INFO L168 Benchmark]: Witness Printer took 71.62 ms. Allocated memory is still 161.5 MB. Free memory was 131.3 MB in the beginning and 128.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 66.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.14 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.81 ms. Allocated memory is still 111.1 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 606.98 ms. Allocated memory is still 111.1 MB. Free memory was 63.0 MB in the beginning and 73.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4962.77 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 72.8 MB in the beginning and 131.3 MB in the end (delta: -58.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.62 ms. Allocated memory is still 161.5 MB. Free memory was 131.3 MB in the beginning and 128.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 978 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 178 SDtfs, 169 SDslu, 163 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...