./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.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_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/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 46346b9bdb9aa51f4f2a6b2718a192f643cce906 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:57:01,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:01,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:01,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:01,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:01,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:01,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:01,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:01,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:01,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:01,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:01,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:01,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:01,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:01,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:01,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:01,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:01,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:01,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:01,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:01,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:01,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:01,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:01,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:01,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:01,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:01,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:01,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:01,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:01,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:01,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:01,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:01,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:01,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:01,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:01,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:01,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:01,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:01,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:01,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:01,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:01,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:01,568 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:01,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:01,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:01,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:01,569 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:01,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:01,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:01,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:01,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:01,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:01,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:01,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:01,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:01,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:01,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:01,573 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_bec62675-f456-498d-aa2c-b8506396007c/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 -> 46346b9bdb9aa51f4f2a6b2718a192f643cce906 [2019-10-22 08:57:01,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:01,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:01,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:01,610 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:01,611 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:01,612 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2019-10-22 08:57:01,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/data/fe786ef70/0764a30b04b94cb99e47c3a2ebf502fd/FLAG87ce6d74f [2019-10-22 08:57:02,093 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:02,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2019-10-22 08:57:02,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/data/fe786ef70/0764a30b04b94cb99e47c3a2ebf502fd/FLAG87ce6d74f [2019-10-22 08:57:02,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/data/fe786ef70/0764a30b04b94cb99e47c3a2ebf502fd [2019-10-22 08:57:02,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:02,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:02,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:02,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:02,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:02,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1957f3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02, skipping insertion in model container [2019-10-22 08:57:02,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,131 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:02,177 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:02,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:02,632 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:02,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:02,756 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:02,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02 WrapperNode [2019-10-22 08:57:02,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:02,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:02,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:02,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:02,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:02,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:02,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:02,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:02,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... [2019-10-22 08:57:02,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:02,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:02,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:02,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:02,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/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 08:57:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:57:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:57:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:57:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:57:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:57:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:57:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:57:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:57:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:57:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:02,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:02,918 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 08:57:03,308 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:03,309 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:57:03,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:03 BoogieIcfgContainer [2019-10-22 08:57:03,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:03,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:03,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:03,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:03,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:02" (1/3) ... [2019-10-22 08:57:03,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41deb093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:03, skipping insertion in model container [2019-10-22 08:57:03,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:02" (2/3) ... [2019-10-22 08:57:03,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41deb093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:03, skipping insertion in model container [2019-10-22 08:57:03,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:03" (3/3) ... [2019-10-22 08:57:03,323 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2019-10-22 08:57:03,352 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,352 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,352 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,352 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,353 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,354 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,354 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,354 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,354 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,355 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,356 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,357 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,357 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,357 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,357 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:03,366 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:57:03,367 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:03,374 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:03,385 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:57:03,407 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:03,407 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:03,408 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:03,408 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:03,408 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:03,408 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:03,408 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:03,408 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:03,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 51 transitions [2019-10-22 08:57:03,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2383 states. [2019-10-22 08:57:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states. [2019-10-22 08:57:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:57:03,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:03,564 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] [2019-10-22 08:57:03,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash -97832814, now seen corresponding path program 1 times [2019-10-22 08:57:03,576 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:03,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003911627] [2019-10-22 08:57:03,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:03,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:03,846 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 08:57:03,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003911627] [2019-10-22 08:57:03,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:03,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:03,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952509537] [2019-10-22 08:57:03,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:03,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:03,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:03,870 INFO L87 Difference]: Start difference. First operand 2383 states. Second operand 4 states. [2019-10-22 08:57:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:03,978 INFO L93 Difference]: Finished difference Result 2491 states and 8067 transitions. [2019-10-22 08:57:03,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:03,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-22 08:57:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:04,017 INFO L225 Difference]: With dead ends: 2491 [2019-10-22 08:57:04,017 INFO L226 Difference]: Without dead ends: 1126 [2019-10-22 08:57:04,021 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 08:57:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-10-22 08:57:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2019-10-22 08:57:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2019-10-22 08:57:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 3556 transitions. [2019-10-22 08:57:04,129 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 3556 transitions. Word has length 28 [2019-10-22 08:57:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:04,129 INFO L462 AbstractCegarLoop]: Abstraction has 1126 states and 3556 transitions. [2019-10-22 08:57:04,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 3556 transitions. [2019-10-22 08:57:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 08:57:04,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:04,138 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] [2019-10-22 08:57:04,139 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash -504796316, now seen corresponding path program 1 times [2019-10-22 08:57:04,139 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:04,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797887686] [2019-10-22 08:57:04,140 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,140 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,287 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 08:57:04,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797887686] [2019-10-22 08:57:04,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:04,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:04,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598379376] [2019-10-22 08:57:04,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:04,290 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:04,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:04,290 INFO L87 Difference]: Start difference. First operand 1126 states and 3556 transitions. Second operand 5 states. [2019-10-22 08:57:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:04,386 INFO L93 Difference]: Finished difference Result 1166 states and 3550 transitions. [2019-10-22 08:57:04,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:04,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 08:57:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:04,393 INFO L225 Difference]: With dead ends: 1166 [2019-10-22 08:57:04,393 INFO L226 Difference]: Without dead ends: 1042 [2019-10-22 08:57:04,394 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 08:57:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2019-10-22 08:57:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2019-10-22 08:57:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2019-10-22 08:57:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 3241 transitions. [2019-10-22 08:57:04,439 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 3241 transitions. Word has length 29 [2019-10-22 08:57:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:04,440 INFO L462 AbstractCegarLoop]: Abstraction has 1042 states and 3241 transitions. [2019-10-22 08:57:04,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 3241 transitions. [2019-10-22 08:57:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:57:04,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:04,443 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 08:57:04,443 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:04,444 INFO L82 PathProgramCache]: Analyzing trace with hash -696107228, now seen corresponding path program 1 times [2019-10-22 08:57:04,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:04,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802540507] [2019-10-22 08:57:04,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,589 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 08:57:04,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802540507] [2019-10-22 08:57:04,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:04,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:04,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486290046] [2019-10-22 08:57:04,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:04,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:04,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:04,593 INFO L87 Difference]: Start difference. First operand 1042 states and 3241 transitions. Second operand 6 states. [2019-10-22 08:57:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:04,680 INFO L93 Difference]: Finished difference Result 818 states and 2377 transitions. [2019-10-22 08:57:04,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:57:04,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-22 08:57:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:04,684 INFO L225 Difference]: With dead ends: 818 [2019-10-22 08:57:04,684 INFO L226 Difference]: Without dead ends: 706 [2019-10-22 08:57:04,685 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 08:57:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-22 08:57:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2019-10-22 08:57:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-22 08:57:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2065 transitions. [2019-10-22 08:57:04,708 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2065 transitions. Word has length 30 [2019-10-22 08:57:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:04,708 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 2065 transitions. [2019-10-22 08:57:04,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2065 transitions. [2019-10-22 08:57:04,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:57:04,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:04,711 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 08:57:04,711 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash 905608300, now seen corresponding path program 1 times [2019-10-22 08:57:04,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:04,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000035927] [2019-10-22 08:57:04,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:04,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:04,940 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 08:57:04,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000035927] [2019-10-22 08:57:04,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:04,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:04,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686436294] [2019-10-22 08:57:04,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:04,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:04,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:04,942 INFO L87 Difference]: Start difference. First operand 706 states and 2065 transitions. Second operand 6 states. [2019-10-22 08:57:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:05,077 INFO L93 Difference]: Finished difference Result 1170 states and 3449 transitions. [2019-10-22 08:57:05,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:05,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-22 08:57:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:05,081 INFO L225 Difference]: With dead ends: 1170 [2019-10-22 08:57:05,082 INFO L226 Difference]: Without dead ends: 670 [2019-10-22 08:57:05,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2019-10-22 08:57:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2019-10-22 08:57:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-22 08:57:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1961 transitions. [2019-10-22 08:57:05,105 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1961 transitions. Word has length 31 [2019-10-22 08:57:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:05,105 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 1961 transitions. [2019-10-22 08:57:05,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1961 transitions. [2019-10-22 08:57:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:57:05,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:05,108 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 08:57:05,108 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 852467634, now seen corresponding path program 2 times [2019-10-22 08:57:05,109 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:05,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76517599] [2019-10-22 08:57:05,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,110 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,294 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 08:57:05,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76517599] [2019-10-22 08:57:05,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:05,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:57:05,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942096433] [2019-10-22 08:57:05,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:05,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:05,296 INFO L87 Difference]: Start difference. First operand 670 states and 1961 transitions. Second operand 8 states. [2019-10-22 08:57:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:05,526 INFO L93 Difference]: Finished difference Result 1454 states and 4369 transitions. [2019-10-22 08:57:05,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:57:05,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-10-22 08:57:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:05,530 INFO L225 Difference]: With dead ends: 1454 [2019-10-22 08:57:05,531 INFO L226 Difference]: Without dead ends: 586 [2019-10-22 08:57:05,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:57:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2019-10-22 08:57:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2019-10-22 08:57:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-22 08:57:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1733 transitions. [2019-10-22 08:57:05,553 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1733 transitions. Word has length 31 [2019-10-22 08:57:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:05,554 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 1733 transitions. [2019-10-22 08:57:05,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1733 transitions. [2019-10-22 08:57:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:57:05,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:05,558 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 08:57:05,558 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 849841858, now seen corresponding path program 3 times [2019-10-22 08:57:05,563 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:05,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193228928] [2019-10-22 08:57:05,563 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:05,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:05,721 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 08:57:05,721 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193228928] [2019-10-22 08:57:05,722 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:05,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:57:05,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240625359] [2019-10-22 08:57:05,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:05,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:05,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:05,723 INFO L87 Difference]: Start difference. First operand 586 states and 1733 transitions. Second operand 8 states. [2019-10-22 08:57:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:05,828 INFO L93 Difference]: Finished difference Result 458 states and 1317 transitions. [2019-10-22 08:57:05,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:57:05,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-10-22 08:57:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:05,829 INFO L225 Difference]: With dead ends: 458 [2019-10-22 08:57:05,829 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:05,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:57:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:05,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-10-22 08:57:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:05,831 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:05,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:05,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:05,835 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:57:05,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:05 BasicIcfg [2019-10-22 08:57:05,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:05,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:05,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:05,838 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:05,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:03" (3/4) ... [2019-10-22 08:57:05,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:05,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:57:05,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:57:05,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:57:05,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-10-22 08:57:05,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:57:05,921 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bec62675-f456-498d-aa2c-b8506396007c/bin/uautomizer/witness.graphml [2019-10-22 08:57:05,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:05,923 INFO L168 Benchmark]: Toolchain (without parser) took 3805.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.7 MB). Free memory was 939.1 MB in the beginning and 1.2 GB in the end (delta: -265.5 MB). Peak memory consumption was 286.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:05,924 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:05,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:05,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.38 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 08:57:05,925 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 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 08:57:05,925 INFO L168 Benchmark]: RCFGBuilder took 468.18 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:05,926 INFO L168 Benchmark]: TraceAbstraction took 2522.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 820.2 MB in the end (delta: 268.0 MB). Peak memory consumption was 268.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:05,926 INFO L168 Benchmark]: Witness Printer took 83.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 820.2 MB in the beginning and 1.2 GB in the end (delta: -384.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:05,928 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 640.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.38 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 35.53 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 468.18 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2522.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 820.2 MB in the end (delta: 268.0 MB). Peak memory consumption was 268.0 MB. Max. memory is 11.5 GB. * Witness Printer took 83.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 820.2 MB in the beginning and 1.2 GB in the end (delta: -384.4 MB). Peak memory consumption was 12.4 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, 69 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 332 SDtfs, 475 SDslu, 930 SDs, 0 SdLazy, 113 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2383occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 14838 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...