./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/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 2cb0904590711f61fe562550478334c4bfa7ca51 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:35,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:35,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:35,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:35,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:35,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:35,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:35,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:35,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:35,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:35,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:35,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:35,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:35,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:35,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:35,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:35,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:35,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:35,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:35,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:35,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:35,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:35,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:35,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:35,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:35,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:35,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:35,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:35,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:35,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:35,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:35,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:35,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:35,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:35,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:35,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:35,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:35,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:35,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:35,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:35,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:35,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:35,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:35,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:35,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:35,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:35,375 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:35,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:35,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:35,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:35,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:35,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:35,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:35,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:35,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:35,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:35,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:35,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:35,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:35,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:35,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:35,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:35,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:35,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:35,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:35,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:35,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:35,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:35,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:35,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:35,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:35,382 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_5e8eda8b-8e21-43e8-bc09-e083a708a304/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb0904590711f61fe562550478334c4bfa7ca51 [2020-11-28 02:57:35,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:35,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:35,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:35,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:35,733 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:35,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-11-28 02:57:35,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/data/d237ea64e/85a4315edce94804b5873de49d530ba8/FLAG9a2347369 [2020-11-28 02:57:36,488 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:36,488 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-11-28 02:57:36,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/data/d237ea64e/85a4315edce94804b5873de49d530ba8/FLAG9a2347369 [2020-11-28 02:57:36,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/data/d237ea64e/85a4315edce94804b5873de49d530ba8 [2020-11-28 02:57:36,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:36,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:36,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:36,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:36,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:36,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,744 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 28.11 02:57:36, skipping insertion in model container [2020-11-28 02:57:36,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:36,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:37,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:37,212 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:37,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:37,399 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:37,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37 WrapperNode [2020-11-28 02:57:37,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:37,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:37,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:37,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:37,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:37,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:37,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:37,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:37,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:37,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:37,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:37,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:37,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:57:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:57:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:57:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:57:37,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:57:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:57:37,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:57:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:57:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:37,662 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:57:38,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:38,255 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:57:38,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:38 BoogieIcfgContainer [2020-11-28 02:57:38,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:38,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:38,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:38,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:38,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:36" (1/3) ... [2020-11-28 02:57:38,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c757e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:38, skipping insertion in model container [2020-11-28 02:57:38,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (2/3) ... [2020-11-28 02:57:38,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c757e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:38, skipping insertion in model container [2020-11-28 02:57:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:38" (3/3) ... [2020-11-28 02:57:38,267 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-11-28 02:57:38,278 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:57:38,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:38,283 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:38,284 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:57:38,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,329 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,329 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,331 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,331 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:38,361 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:57:38,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:57:38,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:38,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:38,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:38,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:38,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:38,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:38,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:38,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:38,424 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:57:38,426 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:38,429 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:38,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:38,492 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 02:57:38,493 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:57:38,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 02:57:38,504 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 02:57:40,742 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-28 02:57:41,355 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-28 02:57:41,610 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-28 02:57:41,610 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-28 02:57:41,615 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 02:57:41,652 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 02:57:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 02:57:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:57:41,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:41,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:41,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-28 02:57:41,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:41,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991440575] [2020-11-28 02:57:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:41,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991440575] [2020-11-28 02:57:41,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:41,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:41,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976535767] [2020-11-28 02:57:41,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:41,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:41,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:41,955 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 02:57:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,061 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-28 02:57:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:42,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 02:57:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,083 INFO L225 Difference]: With dead ends: 282 [2020-11-28 02:57:42,085 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 02:57:42,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 02:57:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-28 02:57:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 02:57:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-28 02:57:42,189 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-28 02:57:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,190 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-28 02:57:42,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-28 02:57:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:42,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:42,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,200 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-11-28 02:57:42,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155942155] [2020-11-28 02:57:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155942155] [2020-11-28 02:57:42,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:42,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743128419] [2020-11-28 02:57:42,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:42,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,295 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-28 02:57:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,317 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-28 02:57:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:42,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:57:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,322 INFO L225 Difference]: With dead ends: 202 [2020-11-28 02:57:42,322 INFO L226 Difference]: Without dead ends: 202 [2020-11-28 02:57:42,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-28 02:57:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-28 02:57:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-28 02:57:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-28 02:57:42,347 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-28 02:57:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,348 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-28 02:57:42,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-28 02:57:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:57:42,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:42,352 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash 839872088, now seen corresponding path program 1 times [2020-11-28 02:57:42,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050329313] [2020-11-28 02:57:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050329313] [2020-11-28 02:57:42,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98270510] [2020-11-28 02:57:42,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:42,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,459 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-28 02:57:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,474 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-28 02:57:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:42,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 02:57:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,478 INFO L225 Difference]: With dead ends: 194 [2020-11-28 02:57:42,478 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 02:57:42,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 02:57:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-28 02:57:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 02:57:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-28 02:57:42,500 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-28 02:57:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,501 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-28 02:57:42,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-28 02:57:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:42,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:42,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-28 02:57:42,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279589301] [2020-11-28 02:57:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279589301] [2020-11-28 02:57:42,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119842689] [2020-11-28 02:57:42,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:42,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:42,642 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-28 02:57:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,683 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-11-28 02:57:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:42,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:57:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,686 INFO L225 Difference]: With dead ends: 225 [2020-11-28 02:57:42,686 INFO L226 Difference]: Without dead ends: 161 [2020-11-28 02:57:42,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:42,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-28 02:57:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-11-28 02:57:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-28 02:57:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-11-28 02:57:42,695 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-11-28 02:57:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,696 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-11-28 02:57:42,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-11-28 02:57:42,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:42,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:42,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,697 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-11-28 02:57:42,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005850623] [2020-11-28 02:57:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005850623] [2020-11-28 02:57:42,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:42,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983107392] [2020-11-28 02:57:42,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:42,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:42,758 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-11-28 02:57:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,808 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-11-28 02:57:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:42,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:57:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,816 INFO L225 Difference]: With dead ends: 160 [2020-11-28 02:57:42,816 INFO L226 Difference]: Without dead ends: 123 [2020-11-28 02:57:42,816 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 [2020-11-28 02:57:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-28 02:57:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-11-28 02:57:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-28 02:57:42,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-11-28 02:57:42,821 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-11-28 02:57:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,821 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-11-28 02:57:42,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:42,822 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-11-28 02:57:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:57:42,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:42,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-11-28 02:57:42,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632948224] [2020-11-28 02:57:42,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632948224] [2020-11-28 02:57:42,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:42,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255472247] [2020-11-28 02:57:42,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:42,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:42,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:42,910 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-11-28 02:57:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,983 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-11-28 02:57:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:42,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 02:57:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,985 INFO L225 Difference]: With dead ends: 118 [2020-11-28 02:57:42,985 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 02:57:42,985 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 [2020-11-28 02:57:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 02:57:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-28 02:57:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 02:57:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-11-28 02:57:42,989 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-11-28 02:57:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,990 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-11-28 02:57:42,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-11-28 02:57:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:42,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:42,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-11-28 02:57:42,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041514353] [2020-11-28 02:57:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:43,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041514353] [2020-11-28 02:57:43,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:43,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:43,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255477592] [2020-11-28 02:57:43,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:43,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:43,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:43,052 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-11-28 02:57:43,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:43,069 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-11-28 02:57:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:43,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:43,070 INFO L225 Difference]: With dead ends: 133 [2020-11-28 02:57:43,070 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 02:57:43,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 02:57:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 02:57:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:57:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-28 02:57:43,073 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-11-28 02:57:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:43,073 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-28 02:57:43,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-28 02:57:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:43,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:43,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:43,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:43,074 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-11-28 02:57:43,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:43,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365581513] [2020-11-28 02:57:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:43,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365581513] [2020-11-28 02:57:43,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:43,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:43,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097000013] [2020-11-28 02:57:43,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:43,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:43,113 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-28 02:57:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:43,132 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-11-28 02:57:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:43,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:43,133 INFO L225 Difference]: With dead ends: 63 [2020-11-28 02:57:43,133 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:57:43,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:57:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-28 02:57:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:57:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-11-28 02:57:43,135 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-11-28 02:57:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:43,135 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-11-28 02:57:43,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-11-28 02:57:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:43,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:43,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:43,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:57:43,136 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1534085368, now seen corresponding path program 3 times [2020-11-28 02:57:43,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:43,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394011399] [2020-11-28 02:57:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:43,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394011399] [2020-11-28 02:57:43,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:43,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:43,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269853239] [2020-11-28 02:57:43,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:43,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:43,193 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-11-28 02:57:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:43,218 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-11-28 02:57:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:43,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:43,219 INFO L225 Difference]: With dead ends: 51 [2020-11-28 02:57:43,219 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 02:57:43,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 02:57:43,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 02:57:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:57:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-28 02:57:43,221 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-28 02:57:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:43,221 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-28 02:57:43,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-28 02:57:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:43,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:43,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:43,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:57:43,222 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:43,222 INFO L82 PathProgramCache]: Analyzing trace with hash 172930902, now seen corresponding path program 4 times [2020-11-28 02:57:43,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:43,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363658625] [2020-11-28 02:57:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:43,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363658625] [2020-11-28 02:57:43,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:43,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:43,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352859522] [2020-11-28 02:57:43,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:43,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:43,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:43,280 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-28 02:57:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:43,298 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-28 02:57:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:43,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:43,299 INFO L225 Difference]: With dead ends: 29 [2020-11-28 02:57:43,299 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:43,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:43,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:57:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:43,300 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:43,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:43,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:43,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:57:43,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:43 BasicIcfg [2020-11-28 02:57:43,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:43,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:43,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:43,304 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:43,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:38" (3/4) ... [2020-11-28 02:57:43,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:43,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:57:43,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:57:43,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:57:43,330 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:57:43,330 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:43,330 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:43,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:43,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5e8eda8b-8e21-43e8-bc09-e083a708a304/bin/uautomizer/witness.graphml [2020-11-28 02:57:43,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:43,395 INFO L168 Benchmark]: Toolchain (without parser) took 6666.60 ms. Allocated memory was 90.2 MB in the beginning and 142.6 MB in the end (delta: 52.4 MB). Free memory was 67.9 MB in the beginning and 68.2 MB in the end (delta: -301.6 kB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:43,395 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 66.8 MB in the end (delta: 61.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:43,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.18 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 67.7 MB in the beginning and 93.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:43,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.67 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:43,397 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 ms. Allocated memory is still 117.4 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:43,397 INFO L168 Benchmark]: RCFGBuilder took 742.81 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 68.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:43,398 INFO L168 Benchmark]: TraceAbstraction took 5043.99 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 67.9 MB in the beginning and 71.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:43,398 INFO L168 Benchmark]: Witness Printer took 89.51 ms. Allocated memory is still 142.6 MB. Free memory was 71.3 MB in the beginning and 68.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:43,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 66.8 MB in the end (delta: 61.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.18 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 67.7 MB in the beginning and 93.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.67 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.88 ms. Allocated memory is still 117.4 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 742.81 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 68.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5043.99 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 67.9 MB in the beginning and 71.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 89.51 ms. Allocated memory is still 142.6 MB. Free memory was 71.3 MB in the beginning and 68.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 206 SDtfs, 147 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...