./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_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_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/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 1468379dc280e03cd79ccd34c208a639d6a349fa .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:04:02,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:04:02,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:04:02,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:04:02,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:04:02,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:04:02,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:04:02,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:04:02,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:04:02,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:04:02,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:04:02,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:04:02,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:04:02,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:04:02,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:04:02,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:04:02,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:04:02,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:04:02,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:04:02,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:04:02,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:04:02,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:04:02,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:04:02,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:04:02,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:04:02,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:04:02,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:04:02,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:04:02,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:04:02,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:04:02,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:04:02,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:04:02,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:04:02,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:04:02,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:04:02,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:04:02,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:04:02,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:04:02,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:04:02,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:04:02,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:04:02,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:04:02,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:04:02,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:04:02,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:04:02,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:04:02,989 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:04:02,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:04:02,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:04:02,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:04:02,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:04:02,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:04:02,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:04:02,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:04:02,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:04:02,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:04:02,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:04:02,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:04:02,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:04:02,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:04:02,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:04:02,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:04:02,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:04:02,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:04:02,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:04:02,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:04:02,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:04:02,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:04:02,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:04:02,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:04:02,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:04:02,996 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_0b063655-fddd-402f-a13f-2e3fb330e917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1468379dc280e03cd79ccd34c208a639d6a349fa [2020-11-30 00:04:03,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:04:03,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:04:03,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:04:03,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:04:03,416 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:04:03,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-11-30 00:04:03,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/data/ccb016972/8dc46feeba254cd9ac46da705f4e22c7/FLAGaa8bd8724 [2020-11-30 00:04:04,232 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:04:04,233 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-11-30 00:04:04,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/data/ccb016972/8dc46feeba254cd9ac46da705f4e22c7/FLAGaa8bd8724 [2020-11-30 00:04:04,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/data/ccb016972/8dc46feeba254cd9ac46da705f4e22c7 [2020-11-30 00:04:04,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:04:04,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:04:04,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:04,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:04:04,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:04:04,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:04" (1/1) ... [2020-11-30 00:04:04,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd7e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:04, skipping insertion in model container [2020-11-30 00:04:04,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:04" (1/1) ... [2020-11-30 00:04:04,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:04:04,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:04:05,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:05,102 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:04:05,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:05,299 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:04:05,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05 WrapperNode [2020-11-30 00:04:05,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:05,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:05,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:04:05,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:04:05,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:05,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:04:05,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:04:05,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:04:05,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... [2020-11-30 00:04:05,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:04:05,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:04:05,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:04:05,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:04:05,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/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 [2020-11-30 00:04:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:04:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:04:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:04:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:04:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 00:04:05,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 00:04:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 00:04:05,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 00:04:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 00:04:05,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 00:04:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:04:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:04:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:04:05,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:04:05,541 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:04:06,111 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:04:06,112 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:04:06,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:06 BoogieIcfgContainer [2020-11-30 00:04:06,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:04:06,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:04:06,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:04:06,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:04:06,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:04:04" (1/3) ... [2020-11-30 00:04:06,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5c89fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:06, skipping insertion in model container [2020-11-30 00:04:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:05" (2/3) ... [2020-11-30 00:04:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5c89fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:06, skipping insertion in model container [2020-11-30 00:04:06,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:06" (3/3) ... [2020-11-30 00:04:06,140 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2020-11-30 00:04:06,163 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:04:06,163 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:04:06,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:04:06,169 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:04:06,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,217 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,217 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:04:06,236 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 00:04:06,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:04:06,271 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:04:06,271 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:04:06,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:04:06,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:04:06,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:04:06,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:04:06,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:04:06,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:04:06,286 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:04:06,289 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-30 00:04:06,293 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-30 00:04:06,295 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-30 00:04:06,393 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-30 00:04:06,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 00:04:06,399 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-30 00:04:06,406 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-30 00:04:08,097 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-30 00:04:09,301 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-30 00:04:09,439 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 00:04:09,625 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-30 00:04:09,730 INFO L131 LiptonReduction]: Checked pairs total: 3412 [2020-11-30 00:04:09,730 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-11-30 00:04:09,738 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-30 00:04:09,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-30 00:04:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-30 00:04:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:04:09,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:09,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:09,790 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1698580066, now seen corresponding path program 1 times [2020-11-30 00:04:09,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:09,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863146886] [2020-11-30 00:04:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:10,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863146886] [2020-11-30 00:04:10,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:10,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:04:10,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114852245] [2020-11-30 00:04:10,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:04:10,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:04:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:04:10,086 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-30 00:04:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:10,169 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-30 00:04:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:04:10,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:04:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:10,195 INFO L225 Difference]: With dead ends: 282 [2020-11-30 00:04:10,196 INFO L226 Difference]: Without dead ends: 218 [2020-11-30 00:04:10,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:04:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-30 00:04:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-30 00:04:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 00:04:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-30 00:04:10,300 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-30 00:04:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:10,302 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-30 00:04:10,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:04:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-30 00:04:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:04:10,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:10,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:10,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:04:10,305 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1116373545, now seen corresponding path program 1 times [2020-11-30 00:04:10,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:10,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347350609] [2020-11-30 00:04:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:10,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347350609] [2020-11-30 00:04:10,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:10,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:04:10,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626988415] [2020-11-30 00:04:10,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:10,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:10,429 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-30 00:04:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:10,463 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-30 00:04:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:10,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:04:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:10,467 INFO L225 Difference]: With dead ends: 242 [2020-11-30 00:04:10,467 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 00:04:10,468 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 [2020-11-30 00:04:10,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 00:04:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-30 00:04:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-30 00:04:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-30 00:04:10,501 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-30 00:04:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:10,503 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-30 00:04:10,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-30 00:04:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:04:10,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:10,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:10,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:04:10,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:10,508 INFO L82 PathProgramCache]: Analyzing trace with hash -906978528, now seen corresponding path program 1 times [2020-11-30 00:04:10,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:10,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608865868] [2020-11-30 00:04:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:10,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608865868] [2020-11-30 00:04:10,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:10,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:04:10,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755366679] [2020-11-30 00:04:10,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:10,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:10,667 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-11-30 00:04:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:10,724 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-11-30 00:04:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:04:10,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:04:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:10,728 INFO L225 Difference]: With dead ends: 165 [2020-11-30 00:04:10,729 INFO L226 Difference]: Without dead ends: 125 [2020-11-30 00:04:10,729 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 [2020-11-30 00:04:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-30 00:04:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-30 00:04:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 00:04:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-11-30 00:04:10,744 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-11-30 00:04:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:10,744 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-11-30 00:04:10,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-11-30 00:04:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:04:10,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:10,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:10,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:04:10,748 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1053183531, now seen corresponding path program 1 times [2020-11-30 00:04:10,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:10,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421259996] [2020-11-30 00:04:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:10,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421259996] [2020-11-30 00:04:10,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:10,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:04:10,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030352134] [2020-11-30 00:04:10,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:04:10,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:04:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:04:10,904 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-11-30 00:04:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:11,029 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-30 00:04:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:04:11,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:04:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:11,033 INFO L225 Difference]: With dead ends: 122 [2020-11-30 00:04:11,033 INFO L226 Difference]: Without dead ends: 97 [2020-11-30 00:04:11,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:04:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-30 00:04:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-30 00:04:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-30 00:04:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-30 00:04:11,047 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-11-30 00:04:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:11,047 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-30 00:04:11,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:04:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-30 00:04:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:04:11,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:11,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:11,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:04:11,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:11,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1529886427, now seen corresponding path program 1 times [2020-11-30 00:04:11,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:11,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704162989] [2020-11-30 00:04:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:11,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704162989] [2020-11-30 00:04:11,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:11,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:04:11,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32665630] [2020-11-30 00:04:11,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:04:11,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:04:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:04:11,181 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-11-30 00:04:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:11,270 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-11-30 00:04:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:04:11,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:04:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:11,272 INFO L225 Difference]: With dead ends: 92 [2020-11-30 00:04:11,272 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 00:04:11,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:04:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 00:04:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-30 00:04:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 00:04:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-11-30 00:04:11,280 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-11-30 00:04:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:11,280 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-11-30 00:04:11,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:04:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-11-30 00:04:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:04:11,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:11,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:11,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:04:11,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:11,292 INFO L82 PathProgramCache]: Analyzing trace with hash 212367058, now seen corresponding path program 1 times [2020-11-30 00:04:11,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:11,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857293826] [2020-11-30 00:04:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:11,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857293826] [2020-11-30 00:04:11,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:11,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:04:11,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348016213] [2020-11-30 00:04:11,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:11,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:11,371 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-11-30 00:04:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:11,397 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-11-30 00:04:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:11,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:04:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:11,398 INFO L225 Difference]: With dead ends: 97 [2020-11-30 00:04:11,399 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:04:11,399 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 [2020-11-30 00:04:11,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:04:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 00:04:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:04:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-30 00:04:11,402 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-11-30 00:04:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:11,403 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-30 00:04:11,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-30 00:04:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:04:11,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:11,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:11,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:04:11,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:11,407 INFO L82 PathProgramCache]: Analyzing trace with hash 671694040, now seen corresponding path program 2 times [2020-11-30 00:04:11,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:11,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436648577] [2020-11-30 00:04:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436648577] [2020-11-30 00:04:11,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:11,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:04:11,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349611030] [2020-11-30 00:04:11,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:11,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:11,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:11,508 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-30 00:04:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:11,531 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-30 00:04:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:11,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:04:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:11,532 INFO L225 Difference]: With dead ends: 35 [2020-11-30 00:04:11,532 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:04:11,532 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 [2020-11-30 00:04:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:04:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:04:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:04:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:04:11,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-30 00:04:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:11,533 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:04:11,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:04:11,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:04:11,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:04:11,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:04:11 BasicIcfg [2020-11-30 00:04:11,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:04:11,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:04:11,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:04:11,538 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:04:11,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:06" (3/4) ... [2020-11-30 00:04:11,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:04:11,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 00:04:11,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 00:04:11,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 00:04:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:04:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:04:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:04:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:04:11,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0b063655-fddd-402f-a13f-2e3fb330e917/bin/uautomizer/witness.graphml [2020-11-30 00:04:11,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:04:11,614 INFO L168 Benchmark]: Toolchain (without parser) took 7194.98 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 66.2 MB in the beginning and 54.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,615 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:11,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.42 ms. Allocated memory is still 88.1 MB. Free memory was 66.0 MB in the beginning and 45.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.58 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,617 INFO L168 Benchmark]: Boogie Preprocessor took 68.49 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 41.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:11,617 INFO L168 Benchmark]: RCFGBuilder took 660.85 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 70.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,618 INFO L168 Benchmark]: TraceAbstraction took 5415.78 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 57.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,619 INFO L168 Benchmark]: Witness Printer took 74.58 ms. Allocated memory is still 132.1 MB. Free memory was 57.3 MB in the beginning and 54.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:11,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 877.42 ms. Allocated memory is still 88.1 MB. Free memory was 66.0 MB in the beginning and 45.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.58 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.49 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 41.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 660.85 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 70.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5415.78 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 57.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.58 ms. Allocated memory is still 132.1 MB. Free memory was 57.3 MB in the beginning and 54.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1073 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 105 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 77 TotalNumberOfCompositions, 3412 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 136 SDtfs, 132 SDslu, 188 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...