./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.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_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/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 11443ba5fcb940082a69ee7d992d4714d4f5f72b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:35:20,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:35:20,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:35:20,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:35:20,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:35:20,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:35:20,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:35:20,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:35:20,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:35:20,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:35:20,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:35:20,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:35:20,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:35:20,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:35:20,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:35:20,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:35:20,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:35:20,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:35:20,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:35:20,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:35:20,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:35:20,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:35:20,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:35:20,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:35:20,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:35:20,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:35:20,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:35:20,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:35:20,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:35:20,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:35:20,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:35:20,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:35:20,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:35:20,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:35:20,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:35:20,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:35:20,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:35:20,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:35:20,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:35:20,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:35:20,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:35:20,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:35:20,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:35:20,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:35:20,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:35:20,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:35:20,830 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:35:20,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:35:20,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:35:20,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:35:20,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:35:20,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:35:20,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:35:20,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:35:20,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:35:20,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:35:20,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:35:20,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:35:20,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:35:20,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:35:20,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:35:20,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:35:20,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:35:20,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:35:20,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:35:20,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:35:20,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:35:20,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:35:20,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:35:20,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:35:20,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:35:20,839 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_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11443ba5fcb940082a69ee7d992d4714d4f5f72b [2020-11-29 18:35:21,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:35:21,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:35:21,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:35:21,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:35:21,101 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:35:21,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-11-29 18:35:21,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/data/e3ddd8dfa/997cad1f25e143419e127c0f64773437/FLAGb6dad27de [2020-11-29 18:35:21,781 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:35:21,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-11-29 18:35:21,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/data/e3ddd8dfa/997cad1f25e143419e127c0f64773437/FLAGb6dad27de [2020-11-29 18:35:22,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/data/e3ddd8dfa/997cad1f25e143419e127c0f64773437 [2020-11-29 18:35:22,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:35:22,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:35:22,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:35:22,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:35:22,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:35:22,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e40df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22, skipping insertion in model container [2020-11-29 18:35:22,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:35:22,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:35:22,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:35:22,584 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:35:22,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:35:22,769 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:35:22,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22 WrapperNode [2020-11-29 18:35:22,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:35:22,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:35:22,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:35:22,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:35:22,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:35:22,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:35:22,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:35:22,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:35:22,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... [2020-11-29 18:35:22,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:35:22,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:35:22,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:35:22,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:35:22,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/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 [2020-11-29 18:35:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:35:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 18:35:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:35:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:35:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 18:35:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 18:35:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 18:35:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 18:35:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 18:35:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 18:35:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:35:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 18:35:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:35:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:35:22,913 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 18:35:23,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:35:23,325 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 18:35:23,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:23 BoogieIcfgContainer [2020-11-29 18:35:23,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:35:23,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:35:23,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:35:23,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:35:23,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:35:22" (1/3) ... [2020-11-29 18:35:23,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6596ca7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:23, skipping insertion in model container [2020-11-29 18:35:23,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:22" (2/3) ... [2020-11-29 18:35:23,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6596ca7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:23, skipping insertion in model container [2020-11-29 18:35:23,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:23" (3/3) ... [2020-11-29 18:35:23,341 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-11-29 18:35:23,351 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 18:35:23,351 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:35:23,354 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:35:23,355 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 18:35:23,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,390 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,394 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,395 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,395 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,395 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,414 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,415 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:35:23,425 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 18:35:23,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 18:35:23,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:35:23,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:35:23,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:35:23,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:35:23,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:35:23,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:35:23,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:35:23,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:35:23,491 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 18:35:23,493 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 18:35:23,495 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 18:35:23,497 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-29 18:35:23,536 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-29 18:35:23,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 18:35:23,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 18:35:23,542 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 18:35:25,735 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-29 18:35:25,862 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-11-29 18:35:25,862 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-29 18:35:25,870 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 18:35:25,910 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 18:35:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 18:35:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:35:25,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:25,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:25,920 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-11-29 18:35:25,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:25,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003284788] [2020-11-29 18:35:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003284788] [2020-11-29 18:35:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:26,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:35:26,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486688359] [2020-11-29 18:35:26,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:35:26,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:26,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:35:26,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:35:26,119 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 18:35:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:26,152 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 18:35:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:35:26,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 18:35:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:26,168 INFO L225 Difference]: With dead ends: 362 [2020-11-29 18:35:26,168 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 18:35:26,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:35:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 18:35:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 18:35:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 18:35:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 18:35:26,238 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 18:35:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:26,239 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 18:35:26,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:35:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 18:35:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:35:26,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:26,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:26,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:35:26,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-11-29 18:35:26,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:26,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123172900] [2020-11-29 18:35:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:26,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123172900] [2020-11-29 18:35:26,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:26,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:35:26,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302328553] [2020-11-29 18:35:26,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:35:26,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:26,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:35:26,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:35:26,404 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-29 18:35:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:26,453 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-29 18:35:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:35:26,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 18:35:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:26,458 INFO L225 Difference]: With dead ends: 346 [2020-11-29 18:35:26,458 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 18:35:26,459 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 [2020-11-29 18:35:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 18:35:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-29 18:35:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-29 18:35:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-29 18:35:26,488 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-29 18:35:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:26,489 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-29 18:35:26,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:35:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-29 18:35:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:35:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:26,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:26,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:35:26,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-11-29 18:35:26,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:26,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362993427] [2020-11-29 18:35:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:26,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362993427] [2020-11-29 18:35:26,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:26,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:35:26,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071883957] [2020-11-29 18:35:26,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:35:26,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:26,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:35:26,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:35:26,574 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-29 18:35:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:26,620 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-11-29 18:35:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:35:26,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 18:35:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:26,625 INFO L225 Difference]: With dead ends: 277 [2020-11-29 18:35:26,625 INFO L226 Difference]: Without dead ends: 213 [2020-11-29 18:35:26,626 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 [2020-11-29 18:35:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-29 18:35:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-11-29 18:35:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-29 18:35:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-11-29 18:35:26,641 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-11-29 18:35:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:26,641 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-11-29 18:35:26,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:35:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-11-29 18:35:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:35:26,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:26,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:26,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:35:26,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-11-29 18:35:26,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:26,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985241288] [2020-11-29 18:35:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:26,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985241288] [2020-11-29 18:35:26,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:26,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:35:26,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670544665] [2020-11-29 18:35:26,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:35:26,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:35:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:35:26,759 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 5 states. [2020-11-29 18:35:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:26,821 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-11-29 18:35:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:35:26,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 18:35:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:26,824 INFO L225 Difference]: With dead ends: 173 [2020-11-29 18:35:26,824 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 18:35:26,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:35:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 18:35:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-29 18:35:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 18:35:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-29 18:35:26,849 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-29 18:35:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:26,849 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-29 18:35:26,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:35:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-29 18:35:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:35:26,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:26,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:26,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:35:26,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-11-29 18:35:26,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:26,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323101690] [2020-11-29 18:35:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:26,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323101690] [2020-11-29 18:35:27,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:27,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:35:27,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300880278] [2020-11-29 18:35:27,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:35:27,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:27,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:35:27,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:35:27,002 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-29 18:35:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:27,067 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-11-29 18:35:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:35:27,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 18:35:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:27,068 INFO L225 Difference]: With dead ends: 119 [2020-11-29 18:35:27,068 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 18:35:27,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:35:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 18:35:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 18:35:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 18:35:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-29 18:35:27,074 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-29 18:35:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:27,074 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-29 18:35:27,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:35:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-29 18:35:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:35:27,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:27,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:27,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:35:27,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-11-29 18:35:27,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:27,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675706548] [2020-11-29 18:35:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:27,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675706548] [2020-11-29 18:35:27,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:27,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:35:27,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844588752] [2020-11-29 18:35:27,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:35:27,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:35:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:35:27,146 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-29 18:35:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:27,180 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-29 18:35:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:35:27,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 18:35:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:27,181 INFO L225 Difference]: With dead ends: 135 [2020-11-29 18:35:27,181 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 18:35:27,181 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 [2020-11-29 18:35:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 18:35:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 18:35:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 18:35:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-29 18:35:27,184 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-29 18:35:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:27,184 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-29 18:35:27,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:35:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-29 18:35:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:35:27,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:27,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:27,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:35:27,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-11-29 18:35:27,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:27,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612431629] [2020-11-29 18:35:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:27,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612431629] [2020-11-29 18:35:27,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:27,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 18:35:27,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055844932] [2020-11-29 18:35:27,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:35:27,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:35:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:35:27,347 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 10 states. [2020-11-29 18:35:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:27,580 INFO L93 Difference]: Finished difference Result 87 states and 149 transitions. [2020-11-29 18:35:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 18:35:27,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 18:35:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:27,605 INFO L225 Difference]: With dead ends: 87 [2020-11-29 18:35:27,605 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 18:35:27,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:35:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 18:35:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-11-29 18:35:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-29 18:35:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 102 transitions. [2020-11-29 18:35:27,609 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 102 transitions. Word has length 18 [2020-11-29 18:35:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:27,609 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 102 transitions. [2020-11-29 18:35:27,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:35:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 102 transitions. [2020-11-29 18:35:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:35:27,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:27,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:27,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:35:27,610 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2018587562, now seen corresponding path program 3 times [2020-11-29 18:35:27,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:27,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369483298] [2020-11-29 18:35:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:27,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369483298] [2020-11-29 18:35:27,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:27,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 18:35:27,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043755914] [2020-11-29 18:35:27,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:35:27,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:27,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:35:27,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:35:27,769 INFO L87 Difference]: Start difference. First operand 59 states and 102 transitions. Second operand 10 states. [2020-11-29 18:35:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:27,910 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-11-29 18:35:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:35:27,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 18:35:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:27,911 INFO L225 Difference]: With dead ends: 73 [2020-11-29 18:35:27,911 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 18:35:27,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:35:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 18:35:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-11-29 18:35:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 18:35:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-29 18:35:27,914 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-11-29 18:35:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:27,914 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-29 18:35:27,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:35:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-29 18:35:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:35:27,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:27,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:27,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 18:35:27,915 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:27,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 4 times [2020-11-29 18:35:27,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:27,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449857225] [2020-11-29 18:35:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:28,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449857225] [2020-11-29 18:35:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:28,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 18:35:28,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057774997] [2020-11-29 18:35:28,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:35:28,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:28,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:35:28,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:35:28,121 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 10 states. [2020-11-29 18:35:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:28,329 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-11-29 18:35:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 18:35:28,330 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 18:35:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:28,330 INFO L225 Difference]: With dead ends: 49 [2020-11-29 18:35:28,330 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 18:35:28,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:35:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 18:35:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 18:35:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:35:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-29 18:35:28,333 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2020-11-29 18:35:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:28,333 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 18:35:28,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:35:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-29 18:35:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:35:28,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:35:28,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:35:28,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 18:35:28,334 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:35:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:35:28,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1533397848, now seen corresponding path program 5 times [2020-11-29 18:35:28,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:35:28,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120797677] [2020-11-29 18:35:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:35:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:35:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:35:28,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120797677] [2020-11-29 18:35:28,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:35:28,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 18:35:28,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432628599] [2020-11-29 18:35:28,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:35:28,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:35:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:35:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:35:28,525 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 10 states. [2020-11-29 18:35:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:35:28,594 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-11-29 18:35:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:35:28,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 18:35:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:35:28,594 INFO L225 Difference]: With dead ends: 26 [2020-11-29 18:35:28,594 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:35:28,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:35:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:35:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:35:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:35:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:35:28,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 18:35:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:35:28,596 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:35:28,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:35:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:35:28,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:35:28,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 18:35:28,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:35:28 BasicIcfg [2020-11-29 18:35:28,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:35:28,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:35:28,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:35:28,599 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:35:28,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:23" (3/4) ... [2020-11-29 18:35:28,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:35:28,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 18:35:28,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 18:35:28,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 18:35:28,610 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 18:35:28,610 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:35:28,610 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:35:28,610 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:35:28,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2f104580-0e29-4a15-9b2b-cd8ab01e4e67/bin/uautomizer/witness.graphml [2020-11-29 18:35:28,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:35:28,659 INFO L168 Benchmark]: Toolchain (without parser) took 6577.23 ms. Allocated memory was 92.3 MB in the beginning and 167.8 MB in the end (delta: 75.5 MB). Free memory was 60.3 MB in the beginning and 100.6 MB in the end (delta: -40.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,659 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:35:28,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 60.0 MB in the beginning and 71.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 68.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,660 INFO L168 Benchmark]: Boogie Preprocessor took 25.40 ms. Allocated memory is still 115.3 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:35:28,661 INFO L168 Benchmark]: RCFGBuilder took 478.48 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 91.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,661 INFO L168 Benchmark]: TraceAbstraction took 5270.78 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 90.8 MB in the beginning and 103.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,662 INFO L168 Benchmark]: Witness Printer took 58.69 ms. Allocated memory is still 167.8 MB. Free memory was 103.7 MB in the beginning and 100.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:28,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 685.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 60.0 MB in the beginning and 71.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 68.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.40 ms. Allocated memory is still 115.3 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 478.48 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 91.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5270.78 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 90.8 MB in the beginning and 103.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * Witness Printer took 58.69 ms. Allocated memory is still 167.8 MB. Free memory was 103.7 MB in the beginning and 100.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 948 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 716 SDs, 0 SdLazy, 563 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 10170 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...