./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 691ed8575a91b9ee823b4f058564c132f43bde1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:10:50,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:10:50,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:10:50,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:10:50,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:10:50,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:10:50,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:10:50,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:10:50,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:10:50,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:10:50,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:10:50,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:10:50,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:10:50,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:10:50,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:10:50,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:10:50,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:10:50,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:10:50,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:10:50,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:10:50,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:10:50,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:10:50,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:10:50,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:10:50,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:10:50,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:10:50,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:10:50,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:10:50,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:10:50,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:10:50,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:10:50,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:10:50,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:10:50,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:10:50,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:10:50,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:10:50,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:10:50,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:10:50,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:10:50,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:10:50,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:10:50,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:10:50,358 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:10:50,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:10:50,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:10:50,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:10:50,360 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:10:50,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:10:50,361 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:10:50,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:10:50,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:10:50,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:10:50,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:10:50,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:10:50,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:10:50,362 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:10:50,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:10:50,363 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:10:50,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:10:50,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:10:50,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:10:50,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:10:50,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:10:50,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:10:50,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:10:50,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:10:50,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:10:50,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:10:50,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:10:50,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:10:50,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7d47842d-4efe-4a15-9cf6-c1927375d059/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(__VERIFIER_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 -> 691ed8575a91b9ee823b4f058564c132f43bde1d [2019-11-15 20:10:50,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:10:50,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:10:50,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:10:50,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:10:50,422 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:10:50,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2019-11-15 20:10:50,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/data/55a22d9b5/02cc10e7d874436fb3c8d3934f73789a/FLAG24896d634 [2019-11-15 20:10:50,984 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:10:50,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2019-11-15 20:10:51,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/data/55a22d9b5/02cc10e7d874436fb3c8d3934f73789a/FLAG24896d634 [2019-11-15 20:10:51,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/data/55a22d9b5/02cc10e7d874436fb3c8d3934f73789a [2019-11-15 20:10:51,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:10:51,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:10:51,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:10:51,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:10:51,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:10:51,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:51,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8b1946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51, skipping insertion in model container [2019-11-15 20:10:51,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:51,250 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:10:51,301 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:10:51,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:10:51,774 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:10:51,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:10:51,940 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:10:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51 WrapperNode [2019-11-15 20:10:51,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:10:51,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:10:51,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:10:51,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:10:51,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:51,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:51,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:10:51,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:10:51,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:10:51,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:10:52,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... [2019-11-15 20:10:52,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:10:52,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:10:52,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:10:52,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:10:52,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/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 [2019-11-15 20:10:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:10:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 20:10:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:10:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:10:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-15 20:10:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-15 20:10:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-15 20:10:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-15 20:10:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-15 20:10:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-15 20:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 20:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:10:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:10:52,098 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 20:10:52,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:10:52,534 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 20:10:52,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:10:52 BoogieIcfgContainer [2019-11-15 20:10:52,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:10:52,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:10:52,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:10:52,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:10:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:10:51" (1/3) ... [2019-11-15 20:10:52,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458bbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:10:52, skipping insertion in model container [2019-11-15 20:10:52,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:10:51" (2/3) ... [2019-11-15 20:10:52,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458bbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:10:52, skipping insertion in model container [2019-11-15 20:10:52,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:10:52" (3/3) ... [2019-11-15 20:10:52,545 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2019-11-15 20:10:52,592 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,592 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,593 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,593 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,593 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,593 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,596 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,596 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,596 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,596 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,597 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,597 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,598 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,598 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,598 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,598 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:10:52,614 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 20:10:52,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:10:52,625 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:10:52,637 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:10:52,659 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:10:52,659 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:10:52,660 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:10:52,660 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:10:52,660 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:10:52,660 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:10:52,661 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:10:52,661 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:10:52,674 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 50 transitions [2019-11-15 20:10:52,774 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1247 states. [2019-11-15 20:10:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states. [2019-11-15 20:10:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 20:10:52,795 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:10:52,796 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:10:52,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:10:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:10:52,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1638063564, now seen corresponding path program 1 times [2019-11-15 20:10:52,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:10:52,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505489193] [2019-11-15 20:10:52,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:52,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:52,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:10:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:10:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:10:53,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505489193] [2019-11-15 20:10:53,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:10:53,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:10:53,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955257739] [2019-11-15 20:10:53,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:10:53,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:10:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:10:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:10:53,183 INFO L87 Difference]: Start difference. First operand 1247 states. Second operand 4 states. [2019-11-15 20:10:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:10:53,302 INFO L93 Difference]: Finished difference Result 1294 states and 3960 transitions. [2019-11-15 20:10:53,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:10:53,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-15 20:10:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:10:53,327 INFO L225 Difference]: With dead ends: 1294 [2019-11-15 20:10:53,328 INFO L226 Difference]: Without dead ends: 600 [2019-11-15 20:10:53,329 INFO L600 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 [2019-11-15 20:10:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-11-15 20:10:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2019-11-15 20:10:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2019-11-15 20:10:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1775 transitions. [2019-11-15 20:10:53,450 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1775 transitions. Word has length 30 [2019-11-15 20:10:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:10:53,452 INFO L462 AbstractCegarLoop]: Abstraction has 600 states and 1775 transitions. [2019-11-15 20:10:53,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:10:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1775 transitions. [2019-11-15 20:10:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 20:10:53,461 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:10:53,461 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:10:53,461 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:10:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:10:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1342295858, now seen corresponding path program 1 times [2019-11-15 20:10:53,462 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:10:53,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561399558] [2019-11-15 20:10:53,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:53,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:53,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:10:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:10:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:10:53,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561399558] [2019-11-15 20:10:53,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:10:53,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:10:53,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788342318] [2019-11-15 20:10:53,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:10:53,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:10:53,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:10:53,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:10:53,642 INFO L87 Difference]: Start difference. First operand 600 states and 1775 transitions. Second operand 5 states. [2019-11-15 20:10:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:10:53,725 INFO L93 Difference]: Finished difference Result 600 states and 1694 transitions. [2019-11-15 20:10:53,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:10:53,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-15 20:10:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:10:53,737 INFO L225 Difference]: With dead ends: 600 [2019-11-15 20:10:53,737 INFO L226 Difference]: Without dead ends: 537 [2019-11-15 20:10:53,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:10:53,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-11-15 20:10:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-11-15 20:10:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-11-15 20:10:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1544 transitions. [2019-11-15 20:10:53,784 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1544 transitions. Word has length 31 [2019-11-15 20:10:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:10:53,785 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 1544 transitions. [2019-11-15 20:10:53,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:10:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1544 transitions. [2019-11-15 20:10:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 20:10:53,797 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:10:53,797 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:10:53,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:10:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:10:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash -275549196, now seen corresponding path program 1 times [2019-11-15 20:10:53,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:10:53,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620978625] [2019-11-15 20:10:53,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:53,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:53,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:10:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:10:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:10:53,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620978625] [2019-11-15 20:10:53,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:10:53,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:10:53,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071680610] [2019-11-15 20:10:53,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:10:53,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:10:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:10:53,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:10:53,972 INFO L87 Difference]: Start difference. First operand 537 states and 1544 transitions. Second operand 6 states. [2019-11-15 20:10:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:10:54,095 INFO L93 Difference]: Finished difference Result 402 states and 1058 transitions. [2019-11-15 20:10:54,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:10:54,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-15 20:10:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:10:54,100 INFO L225 Difference]: With dead ends: 402 [2019-11-15 20:10:54,100 INFO L226 Difference]: Without dead ends: 348 [2019-11-15 20:10:54,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:10:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-11-15 20:10:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2019-11-15 20:10:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-11-15 20:10:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 914 transitions. [2019-11-15 20:10:54,119 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 914 transitions. Word has length 32 [2019-11-15 20:10:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:10:54,119 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 914 transitions. [2019-11-15 20:10:54,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:10:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 914 transitions. [2019-11-15 20:10:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 20:10:54,123 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:10:54,123 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:10:54,123 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:10:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:10:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash 177397973, now seen corresponding path program 1 times [2019-11-15 20:10:54,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:10:54,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604111169] [2019-11-15 20:10:54,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:54,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:54,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:10:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:10:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:10:54,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604111169] [2019-11-15 20:10:54,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:10:54,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 20:10:54,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061744402] [2019-11-15 20:10:54,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:10:54,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:10:54,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:10:54,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:10:54,357 INFO L87 Difference]: Start difference. First operand 348 states and 914 transitions. Second operand 8 states. [2019-11-15 20:10:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:10:54,685 INFO L93 Difference]: Finished difference Result 726 states and 1958 transitions. [2019-11-15 20:10:54,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 20:10:54,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2019-11-15 20:10:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:10:54,688 INFO L225 Difference]: With dead ends: 726 [2019-11-15 20:10:54,688 INFO L226 Difference]: Without dead ends: 252 [2019-11-15 20:10:54,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-11-15 20:10:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2019-11-15 20:10:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2019-11-15 20:10:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-11-15 20:10:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 671 transitions. [2019-11-15 20:10:54,701 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 671 transitions. Word has length 33 [2019-11-15 20:10:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:10:54,702 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 671 transitions. [2019-11-15 20:10:54,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:10:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 671 transitions. [2019-11-15 20:10:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 20:10:54,703 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:10:54,703 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:10:54,704 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:10:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:10:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 137656527, now seen corresponding path program 2 times [2019-11-15 20:10:54,704 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:10:54,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501420613] [2019-11-15 20:10:54,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:54,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:10:54,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:10:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:10:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:10:54,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501420613] [2019-11-15 20:10:54,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:10:54,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 20:10:54,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577530785] [2019-11-15 20:10:54,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:10:54,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:10:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:10:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:10:54,856 INFO L87 Difference]: Start difference. First operand 252 states and 671 transitions. Second operand 8 states. [2019-11-15 20:10:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:10:54,977 INFO L93 Difference]: Finished difference Result 198 states and 509 transitions. [2019-11-15 20:10:54,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:10:54,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2019-11-15 20:10:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:10:54,977 INFO L225 Difference]: With dead ends: 198 [2019-11-15 20:10:54,978 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:10:54,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:10:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:10:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:10:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:10:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:10:54,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-11-15 20:10:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:10:54,979 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:10:54,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:10:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:10:54,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:10:54,983 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 20:10:54,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:10:54 BasicIcfg [2019-11-15 20:10:54,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:10:54,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:10:54,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:10:54,986 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:10:54,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:10:52" (3/4) ... [2019-11-15 20:10:54,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:10:54,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-15 20:10:54,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-15 20:10:54,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-15 20:10:55,010 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-15 20:10:55,010 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 20:10:55,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d47842d-4efe-4a15-9cf6-c1927375d059/bin/uautomizer/witness.graphml [2019-11-15 20:10:55,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:10:55,090 INFO L168 Benchmark]: Toolchain (without parser) took 3858.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 877.2 MB in the end (delta: 67.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:10:55,093 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:10:55,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:10:55,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:10:55,095 INFO L168 Benchmark]: Boogie Preprocessor took 28.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:10:55,095 INFO L168 Benchmark]: RCFGBuilder took 512.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:10:55,096 INFO L168 Benchmark]: TraceAbstraction took 2449.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 877.2 MB in the end (delta: 197.0 MB). Peak memory consumption was 197.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:10:55,096 INFO L168 Benchmark]: Witness Printer took 101.98 ms. Allocated memory is still 1.2 GB. Free memory is still 877.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:10:55,103 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 705.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 512.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2449.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 877.2 MB in the end (delta: 197.0 MB). Peak memory consumption was 197.0 MB. Max. memory is 11.5 GB. * Witness Printer took 101.98 ms. Allocated memory is still 1.2 GB. Free memory is still 877.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 7 procedures, 65 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 240 SDtfs, 374 SDslu, 646 SDs, 0 SdLazy, 88 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1247occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 14862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...