./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.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/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/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 6d86d197481038484c9f95211eb2b95e034f704a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:21,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:21,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:21,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:21,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:21,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:21,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:21,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:21,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:21,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:21,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:21,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:21,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:21,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:21,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:21,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:21,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:21,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:21,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:21,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:21,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:21,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:21,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:21,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:21,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:21,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:21,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:21,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:21,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:21,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:21,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:21,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:21,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:21,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:21,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:21,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:21,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:21,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:21,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:21,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:21,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:21,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:21,599 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:21,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:21,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:21,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:21,602 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:21,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:21,602 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:21,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:21,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:21,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:21,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:21,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:21,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:21,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:21,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:21,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:21,608 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/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/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 -> 6d86d197481038484c9f95211eb2b95e034f704a [2019-10-22 08:55:21,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:21,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:21,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:21,657 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:21,657 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:21,658 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2019-10-22 08:55:21,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/data/4611e1952/719cacb74ff44da19a9e10c812e78dd5/FLAGa2cbf8b73 [2019-10-22 08:55:22,203 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:22,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2019-10-22 08:55:22,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/data/4611e1952/719cacb74ff44da19a9e10c812e78dd5/FLAGa2cbf8b73 [2019-10-22 08:55:22,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/data/4611e1952/719cacb74ff44da19a9e10c812e78dd5 [2019-10-22 08:55:22,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:22,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:22,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:22,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:22,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:22,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:22" (1/1) ... [2019-10-22 08:55:22,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4544c513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:22, skipping insertion in model container [2019-10-22 08:55:22,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:22" (1/1) ... [2019-10-22 08:55:22,492 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:22,549 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:22,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:22,930 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:22,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:23,030 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:23,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23 WrapperNode [2019-10-22 08:55:23,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:23,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:23,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:23,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:23,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:23,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:23,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:23,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:23,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:23,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:23,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:23,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:23,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/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 [2019-10-22 08:55:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:55:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:55:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:55:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:55:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:55:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:55:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:55:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:55:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:23,171 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:55:23,459 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:23,459 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:55:23,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:23 BoogieIcfgContainer [2019-10-22 08:55:23,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:23,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:23,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:23,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:23,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:22" (1/3) ... [2019-10-22 08:55:23,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2b4029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:23, skipping insertion in model container [2019-10-22 08:55:23,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (2/3) ... [2019-10-22 08:55:23,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2b4029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:23, skipping insertion in model container [2019-10-22 08:55:23,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:23" (3/3) ... [2019-10-22 08:55:23,468 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2019-10-22 08:55:23,495 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,495 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,496 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,496 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,496 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,502 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,502 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,502 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,502 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,502 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,503 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,504 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,504 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,504 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,504 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,504 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,505 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,505 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,505 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,505 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,505 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,506 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,506 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,506 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:23,523 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:55:23,523 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:23,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:23,539 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:23,557 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:23,558 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:23,558 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:23,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:23,558 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:23,558 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:23,558 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:23,558 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:23,567 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 53 transitions [2019-10-22 08:55:23,705 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2385 states. [2019-10-22 08:55:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states. [2019-10-22 08:55:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:55:23,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:23,726 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] [2019-10-22 08:55:23,728 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1188867668, now seen corresponding path program 1 times [2019-10-22 08:55:23,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:23,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567186872] [2019-10-22 08:55:23,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:23,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:23,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:24,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567186872] [2019-10-22 08:55:24,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:24,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:24,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319580183] [2019-10-22 08:55:24,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:24,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:24,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:24,027 INFO L87 Difference]: Start difference. First operand 2385 states. Second operand 4 states. [2019-10-22 08:55:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:24,135 INFO L93 Difference]: Finished difference Result 2493 states and 8069 transitions. [2019-10-22 08:55:24,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:24,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-22 08:55:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:24,160 INFO L225 Difference]: With dead ends: 2493 [2019-10-22 08:55:24,160 INFO L226 Difference]: Without dead ends: 1128 [2019-10-22 08:55:24,162 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 [2019-10-22 08:55:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2019-10-22 08:55:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2019-10-22 08:55:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2019-10-22 08:55:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3558 transitions. [2019-10-22 08:55:24,288 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3558 transitions. Word has length 30 [2019-10-22 08:55:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:24,288 INFO L462 AbstractCegarLoop]: Abstraction has 1128 states and 3558 transitions. [2019-10-22 08:55:24,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3558 transitions. [2019-10-22 08:55:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:55:24,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:24,297 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] [2019-10-22 08:55:24,298 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash 649926650, now seen corresponding path program 1 times [2019-10-22 08:55:24,298 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:24,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874641870] [2019-10-22 08:55:24,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:24,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874641870] [2019-10-22 08:55:24,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:24,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:24,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121847952] [2019-10-22 08:55:24,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:24,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:24,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:24,466 INFO L87 Difference]: Start difference. First operand 1128 states and 3558 transitions. Second operand 5 states. [2019-10-22 08:55:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:24,527 INFO L93 Difference]: Finished difference Result 1168 states and 3552 transitions. [2019-10-22 08:55:24,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:24,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 08:55:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:24,532 INFO L225 Difference]: With dead ends: 1168 [2019-10-22 08:55:24,532 INFO L226 Difference]: Without dead ends: 1044 [2019-10-22 08:55:24,533 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 [2019-10-22 08:55:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-22 08:55:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2019-10-22 08:55:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-10-22 08:55:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3243 transitions. [2019-10-22 08:55:24,563 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3243 transitions. Word has length 31 [2019-10-22 08:55:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:24,564 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 3243 transitions. [2019-10-22 08:55:24,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3243 transitions. [2019-10-22 08:55:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:55:24,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:24,567 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] [2019-10-22 08:55:24,567 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1059687656, now seen corresponding path program 1 times [2019-10-22 08:55:24,568 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:24,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560147000] [2019-10-22 08:55:24,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:24,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560147000] [2019-10-22 08:55:24,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:24,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:24,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686559700] [2019-10-22 08:55:24,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:24,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:24,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:24,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:24,671 INFO L87 Difference]: Start difference. First operand 1044 states and 3243 transitions. Second operand 6 states. [2019-10-22 08:55:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:24,777 INFO L93 Difference]: Finished difference Result 820 states and 2379 transitions. [2019-10-22 08:55:24,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:24,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-22 08:55:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:24,781 INFO L225 Difference]: With dead ends: 820 [2019-10-22 08:55:24,782 INFO L226 Difference]: Without dead ends: 708 [2019-10-22 08:55:24,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:55:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-22 08:55:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2019-10-22 08:55:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-22 08:55:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 2067 transitions. [2019-10-22 08:55:24,804 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 2067 transitions. Word has length 32 [2019-10-22 08:55:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:24,805 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 2067 transitions. [2019-10-22 08:55:24,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 2067 transitions. [2019-10-22 08:55:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:55:24,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:24,807 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] [2019-10-22 08:55:24,807 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1280321788, now seen corresponding path program 1 times [2019-10-22 08:55:24,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:24,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967712291] [2019-10-22 08:55:24,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:24,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:24,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967712291] [2019-10-22 08:55:24,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:24,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:24,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485862431] [2019-10-22 08:55:24,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:24,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:24,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:24,940 INFO L87 Difference]: Start difference. First operand 708 states and 2067 transitions. Second operand 7 states. [2019-10-22 08:55:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,058 INFO L93 Difference]: Finished difference Result 1108 states and 3291 transitions. [2019-10-22 08:55:25,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:25,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-10-22 08:55:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,061 INFO L225 Difference]: With dead ends: 1108 [2019-10-22 08:55:25,062 INFO L226 Difference]: Without dead ends: 592 [2019-10-22 08:55:25,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-22 08:55:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-22 08:55:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-22 08:55:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1755 transitions. [2019-10-22 08:55:25,083 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1755 transitions. Word has length 33 [2019-10-22 08:55:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,083 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 1755 transitions. [2019-10-22 08:55:25,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1755 transitions. [2019-10-22 08:55:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:55:25,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,086 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] [2019-10-22 08:55:25,086 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1760044626, now seen corresponding path program 2 times [2019-10-22 08:55:25,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260697519] [2019-10-22 08:55:25,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260697519] [2019-10-22 08:55:25,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:25,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669456666] [2019-10-22 08:55:25,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:25,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:25,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:25,210 INFO L87 Difference]: Start difference. First operand 592 states and 1755 transitions. Second operand 7 states. [2019-10-22 08:55:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,321 INFO L93 Difference]: Finished difference Result 976 states and 2939 transitions. [2019-10-22 08:55:25,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:25,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-10-22 08:55:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,324 INFO L225 Difference]: With dead ends: 976 [2019-10-22 08:55:25,324 INFO L226 Difference]: Without dead ends: 556 [2019-10-22 08:55:25,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2019-10-22 08:55:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2019-10-22 08:55:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-22 08:55:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1671 transitions. [2019-10-22 08:55:25,341 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1671 transitions. Word has length 33 [2019-10-22 08:55:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,341 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 1671 transitions. [2019-10-22 08:55:25,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1671 transitions. [2019-10-22 08:55:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:55:25,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,347 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] [2019-10-22 08:55:25,347 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2074769892, now seen corresponding path program 3 times [2019-10-22 08:55:25,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511221106] [2019-10-22 08:55:25,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511221106] [2019-10-22 08:55:25,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:25,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177472150] [2019-10-22 08:55:25,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:25,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:25,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:25,464 INFO L87 Difference]: Start difference. First operand 556 states and 1671 transitions. Second operand 7 states. [2019-10-22 08:55:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,548 INFO L93 Difference]: Finished difference Result 428 states and 1255 transitions. [2019-10-22 08:55:25,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:25,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-10-22 08:55:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,549 INFO L225 Difference]: With dead ends: 428 [2019-10-22 08:55:25,549 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:25,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:25,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-10-22 08:55:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,551 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:25,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:25,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:25,554 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:55:25,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:25 BasicIcfg [2019-10-22 08:55:25,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:25,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:25,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:25,557 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:25,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:23" (3/4) ... [2019-10-22 08:55:25,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:25,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:55:25,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:55:25,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:55:25,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-10-22 08:55:25,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:25,615 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ab65c276-e32e-4d98-85da-2cf6d400f376/bin/uautomizer/witness.graphml [2019-10-22 08:55:25,615 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:25,618 INFO L168 Benchmark]: Toolchain (without parser) took 3139.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:25,618 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:25,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:25,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.29 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. [2019-10-22 08:55:25,619 INFO L168 Benchmark]: Boogie Preprocessor took 30.40 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. [2019-10-22 08:55:25,619 INFO L168 Benchmark]: RCFGBuilder took 357.63 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:25,620 INFO L168 Benchmark]: TraceAbstraction took 2095.52 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: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:25,620 INFO L168 Benchmark]: Witness Printer took 58.69 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:25,630 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 553.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.29 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 30.40 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 357.63 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2095.52 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: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.69 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: 1.7 MB). Peak memory consumption was 1.7 MB. 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, 71 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 356 SDtfs, 433 SDslu, 956 SDs, 0 SdLazy, 114 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2385occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 16078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...