./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_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_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/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 65f55760d11a4468ae1abb0511efc1da05ee08b9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:55,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:55,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:55,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:55,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:55,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:55,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:55,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:55,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:55,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:55,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:55,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:55,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:55,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:55,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:55,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:55,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:55,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:55,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:55,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:55,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:55,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:55,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:55,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:55,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:55,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:55,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:55,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:55,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:55,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:55,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:55,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:55,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:55,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:55,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:55,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:55,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:55,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:55,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:55,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:55,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:55,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:55,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:55,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:55,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:55,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:55,339 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:55,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:55,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:55,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:55,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:55,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:55,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:55,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:55,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:55,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:55,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:55,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:55,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:55,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:55,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:55,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:55,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:55,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:55,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:55,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:55,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:55,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:55,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:55,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:55,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:55,345 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_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65f55760d11a4468ae1abb0511efc1da05ee08b9 [2020-11-28 02:56:55,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:55,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:55,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:55,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:55,700 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:55,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2020-11-28 02:56:55,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/data/202b2b5b4/eaf5201e04404f86b74cf99d0aed2249/FLAG3e05a7f98 [2020-11-28 02:56:56,336 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:56,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2020-11-28 02:56:56,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/data/202b2b5b4/eaf5201e04404f86b74cf99d0aed2249/FLAG3e05a7f98 [2020-11-28 02:56:56,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/data/202b2b5b4/eaf5201e04404f86b74cf99d0aed2249 [2020-11-28 02:56:56,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:56,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:56,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:56,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:56,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:56,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b179835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56, skipping insertion in model container [2020-11-28 02:56:56,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:56,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:57,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:57,083 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:57,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:57,196 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:57,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57 WrapperNode [2020-11-28 02:56:57,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:57,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:57,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:57,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:57,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:57,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:57,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:57,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:57,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... [2020-11-28 02:56:57,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:57,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:57,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:57,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:57,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:57,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:57,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:56:57,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:56:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:56:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:56:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:56:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:56:57,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:56:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:56:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:57,346 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:56:57,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:57,829 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:56:57,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57 BoogieIcfgContainer [2020-11-28 02:56:57,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:57,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:57,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:57,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:57,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:56" (1/3) ... [2020-11-28 02:56:57,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e51e253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:57, skipping insertion in model container [2020-11-28 02:56:57,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:57" (2/3) ... [2020-11-28 02:56:57,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e51e253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:57, skipping insertion in model container [2020-11-28 02:56:57,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57" (3/3) ... [2020-11-28 02:56:57,841 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-11-28 02:56:57,851 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:56:57,851 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:57,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:57,856 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:56:57,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,900 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:57,907 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:56:57,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:56:57,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:57,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:57,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:57,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:57,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:57,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:57,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:57,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:57,946 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:56:57,948 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-28 02:56:57,951 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-28 02:56:57,953 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-11-28 02:56:57,997 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-11-28 02:56:57,997 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:56:58,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-28 02:56:58,004 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-28 02:56:59,707 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-28 02:57:00,519 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-28 02:57:00,631 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-28 02:57:00,706 INFO L131 LiptonReduction]: Checked pairs total: 2406 [2020-11-28 02:57:00,706 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-28 02:57:00,710 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 02:57:00,733 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-28 02:57:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-28 02:57:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:57:00,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:00,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:00,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-11-28 02:57:00,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:00,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547886242] [2020-11-28 02:57:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:00,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547886242] [2020-11-28 02:57:00,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:00,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:00,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940678254] [2020-11-28 02:57:00,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:00,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:01,005 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-28 02:57:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:01,035 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-28 02:57:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:01,037 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 02:57:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:01,052 INFO L225 Difference]: With dead ends: 274 [2020-11-28 02:57:01,052 INFO L226 Difference]: Without dead ends: 226 [2020-11-28 02:57:01,054 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 02:57:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-28 02:57:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-28 02:57:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-28 02:57:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-28 02:57:01,154 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-28 02:57:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:01,155 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-28 02:57:01,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-28 02:57:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:01,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:01,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:01,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:01,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-11-28 02:57:01,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:01,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064115098] [2020-11-28 02:57:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:01,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064115098] [2020-11-28 02:57:01,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:01,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:01,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942877379] [2020-11-28 02:57:01,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:01,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:01,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:01,322 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-28 02:57:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:01,383 INFO L93 Difference]: Finished difference Result 258 states and 686 transitions. [2020-11-28 02:57:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:01,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 02:57:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:01,387 INFO L225 Difference]: With dead ends: 258 [2020-11-28 02:57:01,387 INFO L226 Difference]: Without dead ends: 210 [2020-11-28 02:57:01,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-28 02:57:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-11-28 02:57:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-11-28 02:57:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 574 transitions. [2020-11-28 02:57:01,424 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 574 transitions. Word has length 9 [2020-11-28 02:57:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:01,424 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 574 transitions. [2020-11-28 02:57:01,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 574 transitions. [2020-11-28 02:57:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:57:01,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:01,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:01,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:01,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 303328579, now seen corresponding path program 1 times [2020-11-28 02:57:01,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:01,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317048284] [2020-11-28 02:57:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:01,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317048284] [2020-11-28 02:57:01,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:01,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:01,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934150363] [2020-11-28 02:57:01,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:01,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:01,567 INFO L87 Difference]: Start difference. First operand 210 states and 574 transitions. Second operand 4 states. [2020-11-28 02:57:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:01,599 INFO L93 Difference]: Finished difference Result 230 states and 600 transitions. [2020-11-28 02:57:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:01,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:57:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:01,602 INFO L225 Difference]: With dead ends: 230 [2020-11-28 02:57:01,602 INFO L226 Difference]: Without dead ends: 190 [2020-11-28 02:57:01,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-28 02:57:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-11-28 02:57:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-28 02:57:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 508 transitions. [2020-11-28 02:57:01,625 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 508 transitions. Word has length 10 [2020-11-28 02:57:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:01,626 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 508 transitions. [2020-11-28 02:57:01,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 508 transitions. [2020-11-28 02:57:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:01,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:01,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:01,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:01,634 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 813888440, now seen corresponding path program 1 times [2020-11-28 02:57:01,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:01,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298081955] [2020-11-28 02:57:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:01,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298081955] [2020-11-28 02:57:01,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:01,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:01,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161147359] [2020-11-28 02:57:01,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:01,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:01,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:01,746 INFO L87 Difference]: Start difference. First operand 190 states and 508 transitions. Second operand 4 states. [2020-11-28 02:57:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:01,775 INFO L93 Difference]: Finished difference Result 210 states and 542 transitions. [2020-11-28 02:57:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:01,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:57:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:01,780 INFO L225 Difference]: With dead ends: 210 [2020-11-28 02:57:01,780 INFO L226 Difference]: Without dead ends: 186 [2020-11-28 02:57:01,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-28 02:57:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-11-28 02:57:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-28 02:57:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 494 transitions. [2020-11-28 02:57:01,821 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 494 transitions. Word has length 11 [2020-11-28 02:57:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:01,822 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 494 transitions. [2020-11-28 02:57:01,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 494 transitions. [2020-11-28 02:57:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:01,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:01,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:01,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:01,822 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:01,823 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-11-28 02:57:01,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:01,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290379582] [2020-11-28 02:57:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:01,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290379582] [2020-11-28 02:57:01,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:01,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:01,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074108095] [2020-11-28 02:57:01,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:01,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:01,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:01,896 INFO L87 Difference]: Start difference. First operand 186 states and 494 transitions. Second operand 5 states. [2020-11-28 02:57:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,001 INFO L93 Difference]: Finished difference Result 358 states and 886 transitions. [2020-11-28 02:57:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:57:02,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:57:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,004 INFO L225 Difference]: With dead ends: 358 [2020-11-28 02:57:02,004 INFO L226 Difference]: Without dead ends: 198 [2020-11-28 02:57:02,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-28 02:57:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-11-28 02:57:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-28 02:57:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 432 transitions. [2020-11-28 02:57:02,028 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 432 transitions. Word has length 12 [2020-11-28 02:57:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,028 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 432 transitions. [2020-11-28 02:57:02,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 432 transitions. [2020-11-28 02:57:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:02,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -89644004, now seen corresponding path program 1 times [2020-11-28 02:57:02,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658620603] [2020-11-28 02:57:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658620603] [2020-11-28 02:57:02,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:02,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661886114] [2020-11-28 02:57:02,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:02,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:02,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:02,102 INFO L87 Difference]: Start difference. First operand 174 states and 432 transitions. Second operand 5 states. [2020-11-28 02:57:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,167 INFO L93 Difference]: Finished difference Result 244 states and 599 transitions. [2020-11-28 02:57:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:02,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:57:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,169 INFO L225 Difference]: With dead ends: 244 [2020-11-28 02:57:02,169 INFO L226 Difference]: Without dead ends: 150 [2020-11-28 02:57:02,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-28 02:57:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-28 02:57:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-28 02:57:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-11-28 02:57:02,176 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-11-28 02:57:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,176 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-11-28 02:57:02,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-11-28 02:57:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:57:02,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:02,178 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 2 times [2020-11-28 02:57:02,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216812831] [2020-11-28 02:57:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216812831] [2020-11-28 02:57:02,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:02,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103846173] [2020-11-28 02:57:02,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:02,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:02,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:02,280 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 4 states. [2020-11-28 02:57:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,316 INFO L93 Difference]: Finished difference Result 164 states and 351 transitions. [2020-11-28 02:57:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:02,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:57:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,318 INFO L225 Difference]: With dead ends: 164 [2020-11-28 02:57:02,318 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 02:57:02,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 02:57:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 02:57:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 02:57:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 276 transitions. [2020-11-28 02:57:02,324 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 276 transitions. Word has length 12 [2020-11-28 02:57:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,324 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 276 transitions. [2020-11-28 02:57:02,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 276 transitions. [2020-11-28 02:57:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:02,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:02,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash 85707411, now seen corresponding path program 1 times [2020-11-28 02:57:02,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646300395] [2020-11-28 02:57:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646300395] [2020-11-28 02:57:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:02,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412919275] [2020-11-28 02:57:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:02,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:02,387 INFO L87 Difference]: Start difference. First operand 128 states and 276 transitions. Second operand 5 states. [2020-11-28 02:57:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,435 INFO L93 Difference]: Finished difference Result 116 states and 222 transitions. [2020-11-28 02:57:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:02,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 02:57:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,437 INFO L225 Difference]: With dead ends: 116 [2020-11-28 02:57:02,437 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 02:57:02,437 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 02:57:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 02:57:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-28 02:57:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 02:57:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-11-28 02:57:02,441 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 13 [2020-11-28 02:57:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,442 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-11-28 02:57:02,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-11-28 02:57:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:57:02,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:57:02,443 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-11-28 02:57:02,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497795736] [2020-11-28 02:57:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497795736] [2020-11-28 02:57:02,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:02,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007432926] [2020-11-28 02:57:02,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:02,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:02,527 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-11-28 02:57:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,574 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-11-28 02:57:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:02,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 02:57:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,575 INFO L225 Difference]: With dead ends: 104 [2020-11-28 02:57:02,575 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 02:57:02,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 02:57:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-11-28 02:57:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 02:57:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-11-28 02:57:02,578 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-11-28 02:57:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,579 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-11-28 02:57:02,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-11-28 02:57:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:02,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:57:02,598 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-11-28 02:57:02,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514568860] [2020-11-28 02:57:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514568860] [2020-11-28 02:57:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:02,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499223665] [2020-11-28 02:57:02,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:02,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:02,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:02,705 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-11-28 02:57:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,756 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-11-28 02:57:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:02,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 02:57:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,756 INFO L225 Difference]: With dead ends: 58 [2020-11-28 02:57:02,756 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:02,756 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 02:57:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:02,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 02:57:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,757 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:02,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:02,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:02,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:57:02,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:02 BasicIcfg [2020-11-28 02:57:02,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:02,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:02,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:02,764 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:02,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57" (3/4) ... [2020-11-28 02:57:02,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:02,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:57:02,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:57:02,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:57:02,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:57:02,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:02,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:02,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:02,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc955dda-91c1-4220-b4fa-b28ac36ffd8c/bin/uautomizer/witness.graphml [2020-11-28 02:57:02,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:02,817 INFO L168 Benchmark]: Toolchain (without parser) took 6169.78 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 66.1 MB in the beginning and 101.0 MB in the end (delta: -34.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,817 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:02,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.89 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 53.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.83 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 51.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,819 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 50.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:02,820 INFO L168 Benchmark]: RCFGBuilder took 563.33 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 81.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,821 INFO L168 Benchmark]: TraceAbstraction took 4926.99 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 81.1 MB in the beginning and 103.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,822 INFO L168 Benchmark]: Witness Printer took 54.81 ms. Allocated memory is still 142.6 MB. Free memory was 103.1 MB in the beginning and 101.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:02,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.89 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 53.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.83 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 51.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 50.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 563.33 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 81.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4926.99 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 81.1 MB in the beginning and 103.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.81 ms. Allocated memory is still 142.6 MB. Free memory was 103.1 MB in the beginning and 101.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 899 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 219 SDtfs, 195 SDslu, 336 SDs, 0 SdLazy, 125 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3634 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...