./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/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 11443ba5fcb940082a69ee7d992d4714d4f5f72b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:00:06,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:06,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:06,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:06,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:06,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:06,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:06,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:06,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:06,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:06,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:06,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:06,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:06,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:06,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:06,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:06,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:06,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:07,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:07,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:07,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:07,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:07,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:07,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:07,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:07,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:07,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:07,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:07,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:07,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:07,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:07,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:07,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:07,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:07,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:07,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:07,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:07,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:07,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:07,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:07,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:07,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:07,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:07,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:07,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:07,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:07,108 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:07,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:07,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:07,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:07,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:07,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:07,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:07,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:07,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:07,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:07,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:07,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:07,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:07,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:07,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:07,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:07,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:07,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:07,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:07,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:07,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:07,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:07,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:07,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:07,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:07,114 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_f603be49-e680-421c-96bc-1831f353b3f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11443ba5fcb940082a69ee7d992d4714d4f5f72b [2020-11-28 03:00:07,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:07,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:07,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:07,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:07,513 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:07,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-11-28 03:00:07,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/data/fb1e90dfa/168790c6d3a84113b7b34c037e7db0c0/FLAG0bd2268f7 [2020-11-28 03:00:08,290 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:08,291 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-11-28 03:00:08,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/data/fb1e90dfa/168790c6d3a84113b7b34c037e7db0c0/FLAG0bd2268f7 [2020-11-28 03:00:08,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/data/fb1e90dfa/168790c6d3a84113b7b34c037e7db0c0 [2020-11-28 03:00:08,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:08,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:08,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:08,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:08,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:08,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcef07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08, skipping insertion in model container [2020-11-28 03:00:08,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:08,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:09,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:09,162 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:09,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:09,379 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:09,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09 WrapperNode [2020-11-28 03:00:09,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:09,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:09,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:09,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:09,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:09,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:09,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:09,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... [2020-11-28 03:00:09,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:09,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:09,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:09,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:09,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/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 03:00:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:00:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:00:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:00:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:00:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:00:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:00:09,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:00:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:00:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:09,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:09,649 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 03:00:10,152 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:10,152 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:00:10,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:10 BoogieIcfgContainer [2020-11-28 03:00:10,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:10,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:10,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:10,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:10,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:08" (1/3) ... [2020-11-28 03:00:10,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b394f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:10, skipping insertion in model container [2020-11-28 03:00:10,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:09" (2/3) ... [2020-11-28 03:00:10,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b394f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:10, skipping insertion in model container [2020-11-28 03:00:10,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:10" (3/3) ... [2020-11-28 03:00:10,165 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-11-28 03:00:10,183 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:00:10,187 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:10,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:10,192 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:00:10,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,228 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:00:10,272 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:00:10,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:00:10,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:10,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:10,321 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:10,321 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:10,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:10,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:10,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:10,322 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:10,334 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:00:10,336 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:00:10,340 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:00:10,342 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:00:10,431 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:00:10,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:00:10,440 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 61 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 03:00:10,445 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:00:12,525 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-11-28 03:00:12,962 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-28 03:00:13,100 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:00:13,142 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-11-28 03:00:13,142 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-28 03:00:13,149 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:00:13,185 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:00:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:00:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:00:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:13,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:13,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-11-28 03:00:13,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:13,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897446928] [2020-11-28 03:00:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:13,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897446928] [2020-11-28 03:00:13,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:13,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:13,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371435803] [2020-11-28 03:00:13,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:13,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:13,460 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:00:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:13,508 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:00:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:13,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:00:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:13,538 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:00:13,538 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:00:13,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:00:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:00:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:00:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:00:13,643 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:00:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:13,644 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:00:13,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:00:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:00:13,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:13,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:13,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:13,647 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:13,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-11-28 03:00:13,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:13,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138056447] [2020-11-28 03:00:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:13,871 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 03:00:13,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138056447] [2020-11-28 03:00:13,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:13,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:13,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357798833] [2020-11-28 03:00:13,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:13,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:13,875 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-28 03:00:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:13,940 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-28 03:00:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:13,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:00:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:13,955 INFO L225 Difference]: With dead ends: 346 [2020-11-28 03:00:13,956 INFO L226 Difference]: Without dead ends: 282 [2020-11-28 03:00:13,957 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 03:00:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-28 03:00:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-28 03:00:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-28 03:00:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-28 03:00:14,020 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-28 03:00:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:14,021 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-28 03:00:14,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-28 03:00:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:00:14,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:14,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:14,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:14,024 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-11-28 03:00:14,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:14,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590823024] [2020-11-28 03:00:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:14,204 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 03:00:14,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590823024] [2020-11-28 03:00:14,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:14,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:14,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017016619] [2020-11-28 03:00:14,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:14,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:14,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:14,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:14,207 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-28 03:00:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:14,279 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-11-28 03:00:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:14,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:00:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:14,284 INFO L225 Difference]: With dead ends: 277 [2020-11-28 03:00:14,284 INFO L226 Difference]: Without dead ends: 213 [2020-11-28 03:00:14,284 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 03:00:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-28 03:00:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-11-28 03:00:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-28 03:00:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-11-28 03:00:14,300 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-11-28 03:00:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:14,301 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-11-28 03:00:14,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-11-28 03:00:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:00:14,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:14,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:14,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:14,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-11-28 03:00:14,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:14,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171558425] [2020-11-28 03:00:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:14,453 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 03:00:14,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171558425] [2020-11-28 03:00:14,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:14,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:14,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321598393] [2020-11-28 03:00:14,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:14,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:14,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:14,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:14,456 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 5 states. [2020-11-28 03:00:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:14,581 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-11-28 03:00:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:14,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:00:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:14,584 INFO L225 Difference]: With dead ends: 173 [2020-11-28 03:00:14,584 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 03:00:14,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 03:00:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 03:00:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-28 03:00:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 03:00:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-28 03:00:14,593 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-28 03:00:14,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:14,594 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-28 03:00:14,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-28 03:00:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:00:14,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:14,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:14,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:14,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-11-28 03:00:14,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:14,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859997596] [2020-11-28 03:00:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:14,774 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 03:00:14,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859997596] [2020-11-28 03:00:14,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:14,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:14,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668414712] [2020-11-28 03:00:14,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:14,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:14,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:14,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:14,777 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-28 03:00:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:14,877 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-11-28 03:00:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:14,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:00:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:14,880 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:00:14,880 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:00:14,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 03:00:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:00:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 03:00:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:00:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-28 03:00:14,887 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-28 03:00:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:14,888 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-28 03:00:14,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-28 03:00:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:14,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:14,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:14,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:14,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-11-28 03:00:14,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:14,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094942853] [2020-11-28 03:00:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:15,006 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 03:00:15,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094942853] [2020-11-28 03:00:15,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:15,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:15,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740905822] [2020-11-28 03:00:15,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:15,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:15,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:15,009 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-28 03:00:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:15,042 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-28 03:00:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:15,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 03:00:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:15,043 INFO L225 Difference]: With dead ends: 135 [2020-11-28 03:00:15,043 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:00:15,044 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 03:00:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:00:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:00:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:00:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-28 03:00:15,047 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-28 03:00:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:15,047 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-28 03:00:15,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-28 03:00:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:15,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:15,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:15,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:15,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-11-28 03:00:15,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:15,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507719954] [2020-11-28 03:00:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:15,270 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 03:00:15,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507719954] [2020-11-28 03:00:15,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:15,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:00:15,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109260330] [2020-11-28 03:00:15,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:15,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:15,273 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 10 states. [2020-11-28 03:00:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:15,607 INFO L93 Difference]: Finished difference Result 87 states and 149 transitions. [2020-11-28 03:00:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:00:15,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 03:00:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:15,609 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:00:15,609 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:00:15,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:00:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:00:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-11-28 03:00:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:00:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 102 transitions. [2020-11-28 03:00:15,614 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 102 transitions. Word has length 18 [2020-11-28 03:00:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:15,614 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 102 transitions. [2020-11-28 03:00:15,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 102 transitions. [2020-11-28 03:00:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:15,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:15,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:15,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:00:15,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2018587562, now seen corresponding path program 3 times [2020-11-28 03:00:15,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:15,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153678696] [2020-11-28 03:00:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:15,799 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 03:00:15,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153678696] [2020-11-28 03:00:15,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:15,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:00:15,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214535002] [2020-11-28 03:00:15,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:15,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:15,802 INFO L87 Difference]: Start difference. First operand 59 states and 102 transitions. Second operand 10 states. [2020-11-28 03:00:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:15,990 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-11-28 03:00:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:15,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 03:00:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:15,992 INFO L225 Difference]: With dead ends: 73 [2020-11-28 03:00:15,992 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:00:15,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:00:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:00:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-11-28 03:00:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:00:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-28 03:00:15,995 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-11-28 03:00:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:15,995 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-28 03:00:15,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-28 03:00:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:15,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:15,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:15,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:00:15,997 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 4 times [2020-11-28 03:00:15,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:15,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008745725] [2020-11-28 03:00:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:16,253 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 03:00:16,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008745725] [2020-11-28 03:00:16,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:16,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:00:16,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958222029] [2020-11-28 03:00:16,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:16,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:16,256 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 10 states. [2020-11-28 03:00:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:16,551 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-11-28 03:00:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:00:16,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 03:00:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:16,552 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:00:16,552 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:00:16,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:00:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:00:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:00:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:00:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:00:16,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2020-11-28 03:00:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:16,555 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:00:16,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:00:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:16,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:16,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:16,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:00:16,557 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1533397848, now seen corresponding path program 5 times [2020-11-28 03:00:16,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:16,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763424336] [2020-11-28 03:00:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:16,791 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 03:00:16,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763424336] [2020-11-28 03:00:16,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:16,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:00:16,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099589738] [2020-11-28 03:00:16,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:16,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:16,794 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 10 states. [2020-11-28 03:00:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:16,894 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-11-28 03:00:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:16,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 03:00:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:16,895 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:00:16,895 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:00:16,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:00:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:00:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:00:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:00:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:00:16,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:00:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:16,896 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:00:16,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:00:16,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:00:16,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:00:16,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:16 BasicIcfg [2020-11-28 03:00:16,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:16,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:16,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:16,901 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:16,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:10" (3/4) ... [2020-11-28 03:00:16,904 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:00:16,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:00:16,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:00:16,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:00:16,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:00:16,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:00:16,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:00:16,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:00:16,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f603be49-e680-421c-96bc-1831f353b3f3/bin/uautomizer/witness.graphml [2020-11-28 03:00:16,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:16,977 INFO L168 Benchmark]: Toolchain (without parser) took 8466.34 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.4 MB in the beginning and 75.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,978 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:16,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.3 MB in the beginning and 56.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.50 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 54.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,980 INFO L168 Benchmark]: Boogie Preprocessor took 53.15 ms. Allocated memory is still 100.7 MB. Free memory was 54.5 MB in the beginning and 53.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:16,980 INFO L168 Benchmark]: RCFGBuilder took 627.26 ms. Allocated memory is still 100.7 MB. Free memory was 53.3 MB in the beginning and 69.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,981 INFO L168 Benchmark]: TraceAbstraction took 6742.89 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 69.4 MB in the beginning and 78.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,982 INFO L168 Benchmark]: Witness Printer took 74.98 ms. Allocated memory is still 146.8 MB. Free memory was 78.9 MB in the beginning and 75.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:16,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 867.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.3 MB in the beginning and 56.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.50 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 54.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.15 ms. Allocated memory is still 100.7 MB. Free memory was 54.5 MB in the beginning and 53.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 627.26 ms. Allocated memory is still 100.7 MB. Free memory was 53.3 MB in the beginning and 69.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6742.89 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 69.4 MB in the beginning and 78.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.98 ms. Allocated memory is still 146.8 MB. Free memory was 78.9 MB in the beginning and 75.7 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 948 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 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: 6.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 716 SDs, 0 SdLazy, 563 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 10170 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...