./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_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_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/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 538cc2603fc8a261463ba2a472beab37ff2c86c6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:58:04,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:58:04,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:58:04,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:58:04,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:58:04,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:58:04,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:58:04,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:58:04,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:58:04,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:58:04,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:58:04,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:58:04,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:58:04,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:58:04,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:58:04,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:58:04,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:58:04,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:58:04,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:58:04,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:58:04,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:58:04,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:58:04,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:58:04,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:58:04,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:58:04,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:58:04,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:58:04,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:58:04,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:58:04,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:58:04,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:58:04,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:58:04,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:58:04,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:58:04,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:58:04,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:58:04,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:58:04,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:58:04,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:58:04,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:58:04,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:58:04,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:58:04,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:58:04,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:58:04,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:58:04,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:58:04,284 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:58:04,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:58:04,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:58:04,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:58:04,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:58:04,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:58:04,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:58:04,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:58:04,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:58:04,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:58:04,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:58:04,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:58:04,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:58:04,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:58:04,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:58:04,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:58:04,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:58:04,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:58:04,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:58:04,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:58:04,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:58:04,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:58:04,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:58:04,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:58:04,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:58:04,291 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_84df8a94-ceff-473e-ac45-9e42adfe2914/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 538cc2603fc8a261463ba2a472beab37ff2c86c6 [2020-11-29 20:58:04,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:58:04,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:58:04,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:58:04,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:58:04,570 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:58:04,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-11-29 20:58:04,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/data/ca577c1f1/5d7ac6fed0c2491788904e900d454415/FLAGad6c1375c [2020-11-29 20:58:05,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:58:05,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-11-29 20:58:05,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/data/ca577c1f1/5d7ac6fed0c2491788904e900d454415/FLAGad6c1375c [2020-11-29 20:58:05,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/data/ca577c1f1/5d7ac6fed0c2491788904e900d454415 [2020-11-29 20:58:05,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:58:05,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:58:05,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:58:05,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:58:05,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:58:05,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:58:05" (1/1) ... [2020-11-29 20:58:05,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f12e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:05, skipping insertion in model container [2020-11-29 20:58:05,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:58:05" (1/1) ... [2020-11-29 20:58:05,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:58:05,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:58:05,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:58:05,947 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:58:05,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:58:06,064 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:58:06,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06 WrapperNode [2020-11-29 20:58:06,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:58:06,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:58:06,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:58:06,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:58:06,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:58:06,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:58:06,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:58:06,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:58:06,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... [2020-11-29 20:58:06,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:58:06,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:58:06,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:58:06,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:58:06,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:58:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:58:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 20:58:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:58:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:58:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 20:58:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 20:58:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 20:58:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 20:58:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 20:58:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 20:58:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:58:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 20:58:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:58:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:58:06,222 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 20:58:06,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:58:06,678 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 20:58:06,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:58:06 BoogieIcfgContainer [2020-11-29 20:58:06,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:58:06,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:58:06,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:58:06,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:58:06,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:58:05" (1/3) ... [2020-11-29 20:58:06,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d93b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:58:06, skipping insertion in model container [2020-11-29 20:58:06,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:58:06" (2/3) ... [2020-11-29 20:58:06,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d93b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:58:06, skipping insertion in model container [2020-11-29 20:58:06,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:58:06" (3/3) ... [2020-11-29 20:58:06,693 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-11-29 20:58:06,710 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 20:58:06,710 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:58:06,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:58:06,715 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 20:58:06,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,756 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,756 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:58:06,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 20:58:06,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:58:06,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:58:06,830 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:58:06,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:58:06,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:58:06,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:58:06,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:58:06,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:58:06,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:58:06,845 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 20:58:06,846 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 20:58:06,850 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 20:58:06,851 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-29 20:58:06,916 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-29 20:58:06,916 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 20:58:06,921 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-29 20:58:06,925 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-29 20:58:08,909 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-29 20:58:09,442 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-29 20:58:09,784 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 20:58:09,885 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 20:58:09,906 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-11-29 20:58:09,906 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-29 20:58:09,913 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-29 20:58:09,944 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-11-29 20:58:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-11-29 20:58:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:58:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:09,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:09,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:09,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-11-29 20:58:09,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:09,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254973683] [2020-11-29 20:58:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:10,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254973683] [2020-11-29 20:58:10,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:10,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 20:58:10,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87823459] [2020-11-29 20:58:10,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:58:10,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:10,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:58:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:58:10,249 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-11-29 20:58:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:10,291 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-11-29 20:58:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:58:10,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 20:58:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:10,317 INFO L225 Difference]: With dead ends: 220 [2020-11-29 20:58:10,317 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 20:58:10,319 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 [2020-11-29 20:58:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 20:58:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-29 20:58:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 20:58:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-11-29 20:58:10,380 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-11-29 20:58:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:10,381 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-11-29 20:58:10,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:58:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-11-29 20:58:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:58:10,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:10,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:10,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:58:10,383 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-11-29 20:58:10,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:10,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858359494] [2020-11-29 20:58:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:10,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858359494] [2020-11-29 20:58:10,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:10,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 20:58:10,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724778962] [2020-11-29 20:58:10,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:58:10,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:10,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:58:10,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:58:10,455 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-11-29 20:58:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:10,475 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-11-29 20:58:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:58:10,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 20:58:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:10,482 INFO L225 Difference]: With dead ends: 163 [2020-11-29 20:58:10,483 INFO L226 Difference]: Without dead ends: 163 [2020-11-29 20:58:10,483 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 [2020-11-29 20:58:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-29 20:58:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-29 20:58:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:58:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-11-29 20:58:10,508 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-11-29 20:58:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:10,508 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-11-29 20:58:10,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:58:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-11-29 20:58:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:58:10,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:10,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:10,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:58:10,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-11-29 20:58:10,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:10,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405271809] [2020-11-29 20:58:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:10,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405271809] [2020-11-29 20:58:10,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:10,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:58:10,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305161894] [2020-11-29 20:58:10,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:58:10,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:10,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:58:10,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:58:10,590 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-11-29 20:58:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:10,611 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-11-29 20:58:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:58:10,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 20:58:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:10,614 INFO L225 Difference]: With dead ends: 211 [2020-11-29 20:58:10,614 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 20:58:10,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:58:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 20:58:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-11-29 20:58:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 20:58:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-11-29 20:58:10,629 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-11-29 20:58:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:10,630 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-11-29 20:58:10,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:58:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-11-29 20:58:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:58:10,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:10,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:10,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:58:10,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-11-29 20:58:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:10,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635853273] [2020-11-29 20:58:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635853273] [2020-11-29 20:58:10,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:10,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:58:10,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103867076] [2020-11-29 20:58:10,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:58:10,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:58:10,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:58:10,744 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-11-29 20:58:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:10,773 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-11-29 20:58:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:58:10,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:58:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:10,775 INFO L225 Difference]: With dead ends: 196 [2020-11-29 20:58:10,775 INFO L226 Difference]: Without dead ends: 124 [2020-11-29 20:58:10,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:58:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-29 20:58:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-29 20:58:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-29 20:58:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-11-29 20:58:10,786 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-11-29 20:58:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:10,786 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-11-29 20:58:10,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:58:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-11-29 20:58:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:58:10,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:10,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:10,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:58:10,788 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-11-29 20:58:10,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:10,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649673401] [2020-11-29 20:58:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:10,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649673401] [2020-11-29 20:58:10,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:10,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:58:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256563274] [2020-11-29 20:58:10,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:58:10,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:58:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:58:10,879 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-11-29 20:58:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:10,928 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-11-29 20:58:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:58:10,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 20:58:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:10,930 INFO L225 Difference]: With dead ends: 144 [2020-11-29 20:58:10,930 INFO L226 Difference]: Without dead ends: 108 [2020-11-29 20:58:10,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:58:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-29 20:58:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-29 20:58:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-29 20:58:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-11-29 20:58:10,938 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-11-29 20:58:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:10,938 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-11-29 20:58:10,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:58:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-11-29 20:58:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:58:10,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:10,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:10,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:58:10,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:10,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:10,949 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-11-29 20:58:10,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:10,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945852889] [2020-11-29 20:58:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:11,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945852889] [2020-11-29 20:58:11,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:11,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:58:11,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990441765] [2020-11-29 20:58:11,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:58:11,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:58:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:58:11,072 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-11-29 20:58:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:11,169 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-11-29 20:58:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:58:11,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 20:58:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:11,170 INFO L225 Difference]: With dead ends: 108 [2020-11-29 20:58:11,170 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 20:58:11,171 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 [2020-11-29 20:58:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 20:58:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-29 20:58:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 20:58:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-11-29 20:58:11,187 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-11-29 20:58:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:11,187 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-11-29 20:58:11,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:58:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-11-29 20:58:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:58:11,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:11,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:11,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:58:11,195 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-11-29 20:58:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:11,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596029453] [2020-11-29 20:58:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:11,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596029453] [2020-11-29 20:58:11,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:11,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:58:11,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863260674] [2020-11-29 20:58:11,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:58:11,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:58:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:58:11,374 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-11-29 20:58:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:11,455 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-11-29 20:58:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:58:11,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 20:58:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:11,456 INFO L225 Difference]: With dead ends: 80 [2020-11-29 20:58:11,456 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 20:58:11,457 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 [2020-11-29 20:58:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 20:58:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 20:58:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:58:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-29 20:58:11,459 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-29 20:58:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:11,459 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-29 20:58:11,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:58:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-29 20:58:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:58:11,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:58:11,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:58:11,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:58:11,460 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:58:11,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:58:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-11-29 20:58:11,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:58:11,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307524429] [2020-11-29 20:58:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:58:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:58:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:58:11,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307524429] [2020-11-29 20:58:11,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:58:11,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:58:11,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984693829] [2020-11-29 20:58:11,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:58:11,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:58:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:58:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:58:11,552 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-29 20:58:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:58:11,589 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-29 20:58:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:58:11,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 20:58:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:58:11,590 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:58:11,590 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:58:11,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:58:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:58:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:58:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:58:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:58:11,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-29 20:58:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:58:11,591 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:58:11,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:58:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:58:11,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:58:11,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:58:11,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:58:11 BasicIcfg [2020-11-29 20:58:11,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:58:11,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:58:11,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:58:11,595 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:58:11,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:58:06" (3/4) ... [2020-11-29 20:58:11,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:58:11,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 20:58:11,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 20:58:11,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 20:58:11,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 20:58:11,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:58:11,615 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:58:11,615 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:58:11,671 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_84df8a94-ceff-473e-ac45-9e42adfe2914/bin/uautomizer/witness.graphml [2020-11-29 20:58:11,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:58:11,676 INFO L168 Benchmark]: Toolchain (without parser) took 6149.14 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 61.9 MB in the beginning and 84.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,678 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 48.6 MB in the beginning and 48.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:58:11,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.75 ms. Allocated memory is still 94.4 MB. Free memory was 61.7 MB in the beginning and 51.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.80 ms. Allocated memory is still 94.4 MB. Free memory was 51.2 MB in the beginning and 49.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,681 INFO L168 Benchmark]: Boogie Preprocessor took 36.77 ms. Allocated memory is still 94.4 MB. Free memory was 49.1 MB in the beginning and 47.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:58:11,681 INFO L168 Benchmark]: RCFGBuilder took 531.08 ms. Allocated memory is still 94.4 MB. Free memory was 47.9 MB in the beginning and 58.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,682 INFO L168 Benchmark]: TraceAbstraction took 4912.28 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.6 MB in the beginning and 86.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,683 INFO L168 Benchmark]: Witness Printer took 80.44 ms. Allocated memory is still 136.3 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:58:11,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 48.6 MB in the beginning and 48.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.75 ms. Allocated memory is still 94.4 MB. Free memory was 61.7 MB in the beginning and 51.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.80 ms. Allocated memory is still 94.4 MB. Free memory was 51.2 MB in the beginning and 49.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.77 ms. Allocated memory is still 94.4 MB. Free memory was 49.1 MB in the beginning and 47.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 531.08 ms. Allocated memory is still 94.4 MB. Free memory was 47.9 MB in the beginning and 58.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4912.28 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.6 MB in the beginning and 86.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Witness Printer took 80.44 ms. Allocated memory is still 136.3 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...