./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e526d74601a089e7b16096a17c73a44c48d37c41 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:22:02,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:22:02,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:22:02,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:22:02,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:22:02,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:22:02,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:22:02,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:22:02,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:22:02,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:22:02,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:22:02,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:22:02,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:22:02,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:22:02,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:22:02,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:22:02,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:22:02,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:22:02,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:22:02,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:22:02,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:22:02,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:22:02,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:22:02,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:22:02,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:22:02,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:22:02,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:22:02,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:22:02,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:22:02,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:22:02,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:22:02,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:22:02,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:22:02,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:22:02,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:22:02,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:22:02,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:22:02,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:22:02,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:22:02,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:22:02,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:22:02,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:22:02,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:22:02,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:22:02,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:22:02,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:22:02,926 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:22:02,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:22:02,926 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:22:02,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:22:02,927 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:22:02,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:22:02,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:22:02,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:22:02,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:22:02,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:22:02,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:22:02,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:22:02,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3a1d8050-17e3-4bab-9073-1b560cd05713/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(__VERIFIER_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 -> e526d74601a089e7b16096a17c73a44c48d37c41 [2019-12-07 18:22:03,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:22:03,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:22:03,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:22:03,041 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:22:03,041 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:22:03,042 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-12-07 18:22:03,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/data/7a59dbc71/4c77484132ac455fa487e8fc0d47aebf/FLAGbae668d02 [2019-12-07 18:22:03,462 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:22:03,463 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-12-07 18:22:03,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/data/7a59dbc71/4c77484132ac455fa487e8fc0d47aebf/FLAGbae668d02 [2019-12-07 18:22:03,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/data/7a59dbc71/4c77484132ac455fa487e8fc0d47aebf [2019-12-07 18:22:03,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:22:03,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:22:03,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:22:03,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:22:03,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:22:03,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61040381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03, skipping insertion in model container [2019-12-07 18:22:03,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:22:03,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:22:03,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:22:03,771 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:22:03,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:22:03,847 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:22:03,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03 WrapperNode [2019-12-07 18:22:03,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:22:03,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:22:03,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:22:03,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:22:03,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:22:03,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:22:03,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:22:03,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:22:03,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... [2019-12-07 18:22:03,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:22:03,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:22:03,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:22:03,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:22:03,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/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 [2019-12-07 18:22:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:22:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:22:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:22:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:22:03,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:22:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 18:22:03,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 18:22:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:22:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:22:03,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:22:03,941 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 18:22:04,131 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:22:04,131 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:22:04,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:22:04 BoogieIcfgContainer [2019-12-07 18:22:04,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:22:04,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:22:04,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:22:04,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:22:04,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:22:03" (1/3) ... [2019-12-07 18:22:04,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de5b9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:22:04, skipping insertion in model container [2019-12-07 18:22:04,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:22:03" (2/3) ... [2019-12-07 18:22:04,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de5b9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:22:04, skipping insertion in model container [2019-12-07 18:22:04,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:22:04" (3/3) ... [2019-12-07 18:22:04,138 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2019-12-07 18:22:04,144 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:22:04,145 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:22:04,149 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:22:04,150 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:22:04,168 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,169 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:22:04,186 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 18:22:04,198 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:22:04,198 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:22:04,198 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:22:04,198 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:22:04,198 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:22:04,198 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:22:04,198 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:22:04,198 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:22:04,207 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions [2019-12-07 18:22:04,208 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-12-07 18:22:04,238 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-12-07 18:22:04,238 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:22:04,244 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 18:22:04,246 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-12-07 18:22:04,260 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-12-07 18:22:04,260 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:22:04,261 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 18:22:04,263 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 18:22:04,264 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:22:05,145 INFO L206 etLargeBlockEncoding]: Checked pairs total: 687 [2019-12-07 18:22:05,145 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2019-12-07 18:22:05,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-12-07 18:22:05,159 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-12-07 18:22:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-12-07 18:22:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:22:05,166 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,166 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,167 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,171 INFO L82 PathProgramCache]: Analyzing trace with hash -162708018, now seen corresponding path program 1 times [2019-12-07 18:22:05,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610025496] [2019-12-07 18:22:05,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610025496] [2019-12-07 18:22:05,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:22:05,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012130890] [2019-12-07 18:22:05,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:22:05,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:22:05,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:22:05,390 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2019-12-07 18:22:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,438 INFO L93 Difference]: Finished difference Result 122 states and 301 transitions. [2019-12-07 18:22:05,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:22:05,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:22:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,447 INFO L225 Difference]: With dead ends: 122 [2019-12-07 18:22:05,447 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 18:22:05,448 INFO L630 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 [2019-12-07 18:22:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 18:22:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 18:22:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 18:22:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 182 transitions. [2019-12-07 18:22:05,476 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 182 transitions. Word has length 10 [2019-12-07 18:22:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,476 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 182 transitions. [2019-12-07 18:22:05,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:22:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 182 transitions. [2019-12-07 18:22:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:22:05,477 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,478 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1102272548, now seen corresponding path program 1 times [2019-12-07 18:22:05,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165370545] [2019-12-07 18:22:05,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165370545] [2019-12-07 18:22:05,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:22:05,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920826914] [2019-12-07 18:22:05,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:22:05,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:22:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:22:05,544 INFO L87 Difference]: Start difference. First operand 76 states and 182 transitions. Second operand 5 states. [2019-12-07 18:22:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,583 INFO L93 Difference]: Finished difference Result 83 states and 182 transitions. [2019-12-07 18:22:05,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:22:05,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:22:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,584 INFO L225 Difference]: With dead ends: 83 [2019-12-07 18:22:05,584 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 18:22:05,585 INFO L630 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 [2019-12-07 18:22:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 18:22:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-12-07 18:22:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 18:22:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 150 transitions. [2019-12-07 18:22:05,591 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 150 transitions. Word has length 11 [2019-12-07 18:22:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,591 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 150 transitions. [2019-12-07 18:22:05,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:22:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 150 transitions. [2019-12-07 18:22:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:22:05,592 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,592 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,592 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -11530752, now seen corresponding path program 1 times [2019-12-07 18:22:05,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917944398] [2019-12-07 18:22:05,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917944398] [2019-12-07 18:22:05,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:22:05,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117094999] [2019-12-07 18:22:05,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:22:05,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:22:05,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:22:05,663 INFO L87 Difference]: Start difference. First operand 68 states and 150 transitions. Second operand 6 states. [2019-12-07 18:22:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,711 INFO L93 Difference]: Finished difference Result 67 states and 136 transitions. [2019-12-07 18:22:05,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:22:05,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 18:22:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,712 INFO L225 Difference]: With dead ends: 67 [2019-12-07 18:22:05,712 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 18:22:05,712 INFO L630 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 [2019-12-07 18:22:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 18:22:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 18:22:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 18:22:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2019-12-07 18:22:05,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 12 [2019-12-07 18:22:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,717 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2019-12-07 18:22:05,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:22:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2019-12-07 18:22:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 18:22:05,718 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,718 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,718 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash -349293673, now seen corresponding path program 1 times [2019-12-07 18:22:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404449229] [2019-12-07 18:22:05,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404449229] [2019-12-07 18:22:05,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:22:05,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914444449] [2019-12-07 18:22:05,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:22:05,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:22:05,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:22:05,775 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 7 states. [2019-12-07 18:22:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,836 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2019-12-07 18:22:05,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:22:05,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 18:22:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,837 INFO L225 Difference]: With dead ends: 53 [2019-12-07 18:22:05,837 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 18:22:05,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:22:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 18:22:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-12-07 18:22:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 18:22:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 98 transitions. [2019-12-07 18:22:05,840 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 98 transitions. Word has length 13 [2019-12-07 18:22:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,840 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 98 transitions. [2019-12-07 18:22:05,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:22:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 98 transitions. [2019-12-07 18:22:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:22:05,841 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,841 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,841 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2056881420, now seen corresponding path program 1 times [2019-12-07 18:22:05,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455360828] [2019-12-07 18:22:05,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455360828] [2019-12-07 18:22:05,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:22:05,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204056352] [2019-12-07 18:22:05,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:22:05,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:22:05,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:22:05,909 INFO L87 Difference]: Start difference. First operand 48 states and 98 transitions. Second operand 5 states. [2019-12-07 18:22:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,924 INFO L93 Difference]: Finished difference Result 53 states and 103 transitions. [2019-12-07 18:22:05,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:22:05,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 18:22:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,925 INFO L225 Difference]: With dead ends: 53 [2019-12-07 18:22:05,925 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:22:05,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:22:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:22:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:22:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:22:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2019-12-07 18:22:05,929 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 14 [2019-12-07 18:22:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,929 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2019-12-07 18:22:05,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:22:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2019-12-07 18:22:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:22:05,930 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,930 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,930 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1378905044, now seen corresponding path program 2 times [2019-12-07 18:22:05,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096087827] [2019-12-07 18:22:05,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:05,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096087827] [2019-12-07 18:22:05,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:05,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:22:05,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576345057] [2019-12-07 18:22:05,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:22:05,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:22:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:22:05,971 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2019-12-07 18:22:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:05,987 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2019-12-07 18:22:05,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:22:05,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 18:22:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:05,988 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:22:05,988 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 18:22:05,988 INFO L630 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 [2019-12-07 18:22:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 18:22:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-12-07 18:22:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:22:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-07 18:22:05,990 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-12-07 18:22:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:05,990 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-07 18:22:05,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:22:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-07 18:22:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:22:05,991 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:05,991 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:05,991 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:05,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:05,991 INFO L82 PathProgramCache]: Analyzing trace with hash -549919962, now seen corresponding path program 3 times [2019-12-07 18:22:05,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:05,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828440086] [2019-12-07 18:22:05,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:06,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828440086] [2019-12-07 18:22:06,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:06,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:22:06,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653523198] [2019-12-07 18:22:06,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:22:06,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:22:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:22:06,033 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 5 states. [2019-12-07 18:22:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:06,061 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-12-07 18:22:06,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:22:06,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 18:22:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:06,062 INFO L225 Difference]: With dead ends: 29 [2019-12-07 18:22:06,062 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 18:22:06,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:22:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 18:22:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 18:22:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 18:22:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-12-07 18:22:06,064 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2019-12-07 18:22:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:06,064 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-12-07 18:22:06,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:22:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-12-07 18:22:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:22:06,064 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:06,064 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:06,064 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:06,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2103109014, now seen corresponding path program 4 times [2019-12-07 18:22:06,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:06,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278366987] [2019-12-07 18:22:06,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:06,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278366987] [2019-12-07 18:22:06,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:06,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:22:06,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926864972] [2019-12-07 18:22:06,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:22:06,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:22:06,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:22:06,105 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2019-12-07 18:22:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:06,117 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-12-07 18:22:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:22:06,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 18:22:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:06,117 INFO L225 Difference]: With dead ends: 22 [2019-12-07 18:22:06,118 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 18:22:06,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:22:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 18:22:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 18:22:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:22:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-12-07 18:22:06,119 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-12-07 18:22:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:06,119 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-12-07 18:22:06,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:22:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-12-07 18:22:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:22:06,120 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:22:06,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:22:06,120 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:22:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:22:06,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2031929270, now seen corresponding path program 5 times [2019-12-07 18:22:06,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:22:06,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465029567] [2019-12-07 18:22:06,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:22:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:22:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:22:06,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465029567] [2019-12-07 18:22:06,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:22:06,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:22:06,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826591549] [2019-12-07 18:22:06,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:22:06,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:22:06,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:22:06,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:22:06,154 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-12-07 18:22:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:22:06,168 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-12-07 18:22:06,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:22:06,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 18:22:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:22:06,169 INFO L225 Difference]: With dead ends: 14 [2019-12-07 18:22:06,169 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:22:06,169 INFO L630 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 [2019-12-07 18:22:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:22:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:22:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:22:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:22:06,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 18:22:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:22:06,169 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:22:06,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:22:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:22:06,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:22:06,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:22:06 BasicIcfg [2019-12-07 18:22:06,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:22:06,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:22:06,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:22:06,172 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:22:06,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:22:04" (3/4) ... [2019-12-07 18:22:06,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:22:06,179 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:22:06,180 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:22:06,180 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:22:06,180 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 18:22:06,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 18:22:06,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:22:06,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:22:06,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a1d8050-17e3-4bab-9073-1b560cd05713/bin/uautomizer/witness.graphml [2019-12-07 18:22:06,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:22:06,214 INFO L168 Benchmark]: Toolchain (without parser) took 2729.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 940.9 MB in the beginning and 956.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 117.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,214 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:22:06,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:22:06,215 INFO L168 Benchmark]: Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,215 INFO L168 Benchmark]: RCFGBuilder took 234.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,216 INFO L168 Benchmark]: TraceAbstraction took 2039.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.4 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,216 INFO L168 Benchmark]: Witness Printer took 40.12 ms. Allocated memory is still 1.2 GB. Free memory was 963.4 MB in the beginning and 956.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:22:06,217 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2039.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.4 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.12 ms. Allocated memory is still 1.2 GB. Free memory was 963.4 MB in the beginning and 956.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 77 ProgramPointsBefore, 28 ProgramPointsAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 362 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 687 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 5 procedures, 65 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 197 SDslu, 129 SDs, 0 SdLazy, 121 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...