./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_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_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/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 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:56:31,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:31,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:31,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:31,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:31,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:31,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:31,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:31,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:31,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:31,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:31,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:31,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:31,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:31,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:31,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:31,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:31,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:31,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:31,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:31,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:31,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:31,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:31,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:31,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:31,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:31,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:31,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:31,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:31,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:31,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:31,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:31,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:31,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:31,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:31,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:31,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:31,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:31,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:31,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:31,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:31,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:56:31,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:31,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:31,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:31,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:31,217 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:31,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:31,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:56:31,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:31,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:56:31,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:31,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:56:31,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:56:31,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:56:31,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:56:31,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:31,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:31,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:56:31,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:31,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:31,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:56:31,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:56:31,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:56:31,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:31,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:56:31,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:56:31,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:31,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:56:31,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:56:31,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:31,223 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_72d04368-463c-4d0a-a947-23f2211cc171/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 [2020-11-29 23:56:31,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:31,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:31,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:31,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:31,540 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:31,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-11-29 23:56:31,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/data/86dbfc9de/96462b3b5eec4a9799241d120114b8d4/FLAG9141e4bff [2020-11-29 23:56:32,113 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:32,113 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-11-29 23:56:32,129 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/data/86dbfc9de/96462b3b5eec4a9799241d120114b8d4/FLAG9141e4bff [2020-11-29 23:56:32,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/data/86dbfc9de/96462b3b5eec4a9799241d120114b8d4 [2020-11-29 23:56:32,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:32,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:32,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:32,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:32,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:32,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:32" (1/1) ... [2020-11-29 23:56:32,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457e881c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:32, skipping insertion in model container [2020-11-29 23:56:32,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:32" (1/1) ... [2020-11-29 23:56:32,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:32,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:32,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:32,969 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:33,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:33,091 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:33,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33 WrapperNode [2020-11-29 23:56:33,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:33,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:33,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:33,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:33,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:33,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:33,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:33,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:33,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... [2020-11-29 23:56:33,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:33,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:33,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:33,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:33,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/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 23:56:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:56:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 23:56:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:56:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 23:56:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 23:56:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 23:56:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 23:56:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 23:56:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 23:56:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:56:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 23:56:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:33,295 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 23:56:33,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:33,828 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:56:33,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:33 BoogieIcfgContainer [2020-11-29 23:56:33,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:33,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:56:33,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:56:33,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:56:33,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:56:32" (1/3) ... [2020-11-29 23:56:33,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf3bbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:33, skipping insertion in model container [2020-11-29 23:56:33,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:33" (2/3) ... [2020-11-29 23:56:33,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf3bbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:33, skipping insertion in model container [2020-11-29 23:56:33,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:33" (3/3) ... [2020-11-29 23:56:33,839 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-11-29 23:56:33,853 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:56:33,853 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:56:33,863 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:56:33,864 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:56:33,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,896 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,896 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,896 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,898 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,898 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,898 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,899 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,903 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,904 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,909 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:56:33,913 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 23:56:33,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 23:56:33,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:56:33,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:56:33,945 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:56:33,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:33,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:33,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:56:33,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:33,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:56:33,956 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:56:33,958 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-29 23:56:33,961 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-29 23:56:33,962 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-29 23:56:34,007 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-29 23:56:34,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 23:56:34,011 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 23:56:34,016 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 23:56:34,937 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:56:35,701 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-29 23:56:36,747 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-29 23:56:37,064 INFO L131 LiptonReduction]: Checked pairs total: 3412 [2020-11-29 23:56:37,064 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-11-29 23:56:37,070 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 23:56:37,104 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-29 23:56:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-29 23:56:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:56:37,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:37,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:37,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1698580066, now seen corresponding path program 1 times [2020-11-29 23:56:37,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:37,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467721209] [2020-11-29 23:56:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:37,394 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 23:56:37,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467721209] [2020-11-29 23:56:37,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:37,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:56:37,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153205348] [2020-11-29 23:56:37,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:56:37,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:37,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:37,423 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-29 23:56:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:37,480 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-29 23:56:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:37,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 23:56:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:37,496 INFO L225 Difference]: With dead ends: 282 [2020-11-29 23:56:37,497 INFO L226 Difference]: Without dead ends: 218 [2020-11-29 23:56:37,498 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 23:56:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-29 23:56:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-29 23:56:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 23:56:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-29 23:56:37,601 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-29 23:56:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:37,602 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-29 23:56:37,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:56:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-29 23:56:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:56:37,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:37,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:37,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:56:37,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1116373545, now seen corresponding path program 1 times [2020-11-29 23:56:37,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:37,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297428544] [2020-11-29 23:56:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:37,748 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 23:56:37,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297428544] [2020-11-29 23:56:37,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:37,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:37,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940975289] [2020-11-29 23:56:37,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:37,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:37,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:37,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:37,751 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-29 23:56:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:37,781 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-29 23:56:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:37,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 23:56:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:37,784 INFO L225 Difference]: With dead ends: 242 [2020-11-29 23:56:37,784 INFO L226 Difference]: Without dead ends: 146 [2020-11-29 23:56:37,785 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 23:56:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-29 23:56:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-29 23:56:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 23:56:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-29 23:56:37,798 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-29 23:56:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:37,799 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-29 23:56:37,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-29 23:56:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:56:37,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:37,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:37,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:56:37,801 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:37,802 INFO L82 PathProgramCache]: Analyzing trace with hash -906978528, now seen corresponding path program 1 times [2020-11-29 23:56:37,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101405736] [2020-11-29 23:56:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:37,947 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 23:56:37,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101405736] [2020-11-29 23:56:37,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:37,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:37,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347769875] [2020-11-29 23:56:37,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:37,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:37,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:37,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:37,950 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-11-29 23:56:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:37,986 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-11-29 23:56:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:37,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 23:56:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:37,988 INFO L225 Difference]: With dead ends: 165 [2020-11-29 23:56:37,988 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 23:56:37,989 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 23:56:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 23:56:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-29 23:56:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 23:56:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-11-29 23:56:38,000 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-11-29 23:56:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:38,000 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-11-29 23:56:38,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-11-29 23:56:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:56:38,002 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:38,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:56:38,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:38,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1053183531, now seen corresponding path program 1 times [2020-11-29 23:56:38,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:38,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759197998] [2020-11-29 23:56:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:38,128 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 23:56:38,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759197998] [2020-11-29 23:56:38,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:38,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:38,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57154898] [2020-11-29 23:56:38,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:38,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:38,131 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-11-29 23:56:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:38,187 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-29 23:56:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:38,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 23:56:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:38,189 INFO L225 Difference]: With dead ends: 122 [2020-11-29 23:56:38,189 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 23:56:38,189 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 23:56:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 23:56:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-29 23:56:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 23:56:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-29 23:56:38,197 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-11-29 23:56:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:38,197 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-29 23:56:38,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-29 23:56:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:56:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:38,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:56:38,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1529886427, now seen corresponding path program 1 times [2020-11-29 23:56:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:38,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623220359] [2020-11-29 23:56:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:38,368 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 23:56:38,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623220359] [2020-11-29 23:56:38,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:38,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:38,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459751333] [2020-11-29 23:56:38,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:38,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:38,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:38,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:38,374 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-11-29 23:56:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:38,455 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-11-29 23:56:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:38,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 23:56:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:38,457 INFO L225 Difference]: With dead ends: 92 [2020-11-29 23:56:38,457 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 23:56:38,457 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 23:56:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 23:56:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-29 23:56:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 23:56:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-11-29 23:56:38,466 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-11-29 23:56:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:38,467 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-11-29 23:56:38,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-11-29 23:56:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:56:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:38,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:56:38,469 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash 212367058, now seen corresponding path program 1 times [2020-11-29 23:56:38,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:38,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618191964] [2020-11-29 23:56:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:38,539 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 23:56:38,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618191964] [2020-11-29 23:56:38,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:38,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:38,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708559325] [2020-11-29 23:56:38,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:38,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:38,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:38,542 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-11-29 23:56:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:38,562 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-11-29 23:56:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:38,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 23:56:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:38,563 INFO L225 Difference]: With dead ends: 97 [2020-11-29 23:56:38,563 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 23:56:38,563 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 23:56:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 23:56:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 23:56:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:56:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-29 23:56:38,566 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-11-29 23:56:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:38,566 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-29 23:56:38,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-29 23:56:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:56:38,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:38,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:56:38,568 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash 671694040, now seen corresponding path program 2 times [2020-11-29 23:56:38,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:38,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228846319] [2020-11-29 23:56:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:38,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228846319] [2020-11-29 23:56:38,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:38,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:38,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826410169] [2020-11-29 23:56:38,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:38,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:38,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:38,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:38,642 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-29 23:56:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:38,661 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-29 23:56:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:38,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 23:56:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:38,662 INFO L225 Difference]: With dead ends: 35 [2020-11-29 23:56:38,662 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:56:38,662 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 23:56:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:56:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:56:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:56:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:56:38,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 23:56:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:38,663 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:38,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:56:38,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:56:38,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:56:38,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:56:38 BasicIcfg [2020-11-29 23:56:38,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:56:38,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:56:38,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:56:38,667 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:56:38,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:33" (3/4) ... [2020-11-29 23:56:38,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:56:38,679 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 23:56:38,679 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 23:56:38,679 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 23:56:38,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 23:56:38,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:56:38,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:38,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:38,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72d04368-463c-4d0a-a947-23f2211cc171/bin/uautomizer/witness.graphml [2020-11-29 23:56:38,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:56:38,730 INFO L168 Benchmark]: Toolchain (without parser) took 6285.29 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 56.2 MB in the beginning and 46.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 60.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,730 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 46.4 MB in the beginning and 46.3 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:38,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.95 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 44.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 43.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,732 INFO L168 Benchmark]: Boogie Preprocessor took 26.29 ms. Allocated memory is still 88.1 MB. Free memory was 42.7 MB in the beginning and 41.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:38,733 INFO L168 Benchmark]: RCFGBuilder took 664.86 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.6 MB in the beginning and 72.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,734 INFO L168 Benchmark]: TraceAbstraction took 4834.48 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 71.8 MB in the beginning and 50.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,734 INFO L168 Benchmark]: Witness Printer took 61.24 ms. Allocated memory is still 138.4 MB. Free memory was 50.0 MB in the beginning and 46.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:38,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 46.4 MB in the beginning and 46.3 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 646.95 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 44.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 43.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.29 ms. Allocated memory is still 88.1 MB. Free memory was 42.7 MB in the beginning and 41.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 664.86 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.6 MB in the beginning and 72.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4834.48 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 71.8 MB in the beginning and 50.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.24 ms. Allocated memory is still 138.4 MB. Free memory was 50.0 MB in the beginning and 46.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1073 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 105 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 77 TotalNumberOfCompositions, 3412 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 136 SDtfs, 132 SDslu, 188 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...