./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b31afe6a0b1e539547810c10c92ccc7a6b9358f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:23:13,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:23:13,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:23:13,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:23:13,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:23:13,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:23:13,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:23:13,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:23:13,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:23:13,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:23:13,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:23:13,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:23:13,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:23:13,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:23:13,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:23:13,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:23:13,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:23:13,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:23:13,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:23:13,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:23:13,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:23:13,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:23:13,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:23:13,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:23:13,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:23:13,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:23:13,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:23:13,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:23:13,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:23:13,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:23:13,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:23:13,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:23:13,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:23:13,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:23:13,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:23:13,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:23:13,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:23:13,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:23:13,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:23:13,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:23:13,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:23:13,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 13:23:13,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:23:13,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:23:13,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:23:13,847 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:23:13,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:23:13,847 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:23:13,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:23:13,847 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:23:13,848 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:23:13,848 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:23:13,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:23:13,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:23:13,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:23:13,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:23:13,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:23:13,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:23:13,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:23:13,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:23:13,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:23:13,852 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan 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 -> Taipan 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 -> 2b31afe6a0b1e539547810c10c92ccc7a6b9358f [2019-12-07 13:23:13,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:23:13,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:23:13,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:23:13,965 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:23:13,965 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:23:13,966 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-12-07 13:23:14,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/data/a515f562c/ffa79777ad95430d937abf51d10b98e2/FLAG6914b8715 [2019-12-07 13:23:14,484 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:23:14,484 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-12-07 13:23:14,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/data/a515f562c/ffa79777ad95430d937abf51d10b98e2/FLAG6914b8715 [2019-12-07 13:23:14,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/data/a515f562c/ffa79777ad95430d937abf51d10b98e2 [2019-12-07 13:23:14,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:23:14,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:23:14,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:23:14,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:23:14,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:23:14,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:23:14" (1/1) ... [2019-12-07 13:23:14,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a25c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:14, skipping insertion in model container [2019-12-07 13:23:14,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:23:14" (1/1) ... [2019-12-07 13:23:14,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:23:15,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:23:15,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:23:15,255 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:23:15,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:23:15,334 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:23:15,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15 WrapperNode [2019-12-07 13:23:15,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:23:15,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:23:15,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:23:15,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:23:15,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:23:15,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:23:15,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:23:15,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:23:15,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... [2019-12-07 13:23:15,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:23:15,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:23:15,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:23:15,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:23:15,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/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 [2019-12-07 13:23:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:23:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:23:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:23:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:23:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:23:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:23:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:23:15,430 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 13:23:15,606 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:23:15,606 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:23:15,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:23:15 BoogieIcfgContainer [2019-12-07 13:23:15,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:23:15,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:23:15,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:23:15,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:23:15,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:23:14" (1/3) ... [2019-12-07 13:23:15,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503bf3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:23:15, skipping insertion in model container [2019-12-07 13:23:15,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:23:15" (2/3) ... [2019-12-07 13:23:15,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503bf3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:23:15, skipping insertion in model container [2019-12-07 13:23:15,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:23:15" (3/3) ... [2019-12-07 13:23:15,611 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2019-12-07 13:23:15,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:23:15,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:23:15,622 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:23:15,622 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:23:15,639 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,640 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,641 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,642 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:23:15,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:23:15,673 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:23:15,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:23:15,673 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:23:15,673 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:23:15,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:23:15,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:23:15,674 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:23:15,674 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:23:15,682 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 13:23:15,683 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:23:15,716 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:23:15,716 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:23:15,720 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:23:15,722 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:23:15,732 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:23:15,732 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:23:15,733 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:23:15,735 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 13:23:15,736 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:23:16,478 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 13:23:16,596 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 13:23:16,596 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 13:23:16,598 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 13:23:16,606 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 13:23:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 13:23:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:23:16,612 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:16,612 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:16,612 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 13:23:16,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:16,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661887340] [2019-12-07 13:23:16,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:16,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661887340] [2019-12-07 13:23:16,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:16,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:23:16,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877670881] [2019-12-07 13:23:16,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:23:16,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:16,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:23:16,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:16,806 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 13:23:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:16,848 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 13:23:16,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:16,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 13:23:16,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:16,857 INFO L225 Difference]: With dead ends: 58 [2019-12-07 13:23:16,857 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:23:16,858 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:23:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:23:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 13:23:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:23:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 13:23:16,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 13:23:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:16,883 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 13:23:16,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:23:16,883 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 13:23:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:23:16,883 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:16,884 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:16,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:16,884 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 13:23:16,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:16,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52774588] [2019-12-07 13:23:16,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:16,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52774588] [2019-12-07 13:23:16,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:16,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:23:16,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451924575] [2019-12-07 13:23:16,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:23:16,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:16,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:23:16,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:16,953 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 13:23:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:16,964 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-12-07 13:23:16,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:16,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 13:23:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:16,965 INFO L225 Difference]: With dead ends: 39 [2019-12-07 13:23:16,965 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 13:23:16,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 13:23:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 13:23:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 13:23:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-12-07 13:23:16,969 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-12-07 13:23:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:16,969 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-12-07 13:23:16,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:23:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-12-07 13:23:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:23:16,970 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:16,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:16,970 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-07 13:23:16,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:16,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033886592] [2019-12-07 13:23:16,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:17,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033886592] [2019-12-07 13:23:17,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:17,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:23:17,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514777363] [2019-12-07 13:23:17,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:23:17,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:23:17,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:17,019 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2019-12-07 13:23:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:17,030 INFO L93 Difference]: Finished difference Result 38 states and 61 transitions. [2019-12-07 13:23:17,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:17,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 13:23:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:17,031 INFO L225 Difference]: With dead ends: 38 [2019-12-07 13:23:17,031 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 13:23:17,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 13:23:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-12-07 13:23:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 13:23:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 53 transitions. [2019-12-07 13:23:17,036 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 53 transitions. Word has length 9 [2019-12-07 13:23:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:17,036 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 53 transitions. [2019-12-07 13:23:17,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:23:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2019-12-07 13:23:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:23:17,037 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:17,037 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:17,037 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash 400560283, now seen corresponding path program 1 times [2019-12-07 13:23:17,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:17,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491462818] [2019-12-07 13:23:17,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:17,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491462818] [2019-12-07 13:23:17,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:17,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:23:17,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939564890] [2019-12-07 13:23:17,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:23:17,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:23:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:17,090 INFO L87 Difference]: Start difference. First operand 31 states and 53 transitions. Second operand 4 states. [2019-12-07 13:23:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:17,100 INFO L93 Difference]: Finished difference Result 36 states and 59 transitions. [2019-12-07 13:23:17,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:17,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:23:17,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:17,101 INFO L225 Difference]: With dead ends: 36 [2019-12-07 13:23:17,101 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 13:23:17,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 13:23:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-12-07 13:23:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:23:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2019-12-07 13:23:17,104 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 10 [2019-12-07 13:23:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:17,104 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 46 transitions. [2019-12-07 13:23:17,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:23:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 46 transitions. [2019-12-07 13:23:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:23:17,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:17,105 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:17,105 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 13:23:17,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:17,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557589580] [2019-12-07 13:23:17,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:17,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557589580] [2019-12-07 13:23:17,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:17,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:23:17,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915038489] [2019-12-07 13:23:17,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:23:17,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:23:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:23:17,136 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand 4 states. [2019-12-07 13:23:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:17,150 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2019-12-07 13:23:17,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:17,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:23:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:17,151 INFO L225 Difference]: With dead ends: 34 [2019-12-07 13:23:17,151 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 13:23:17,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:23:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 13:23:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 13:23:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 13:23:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2019-12-07 13:23:17,154 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 11 [2019-12-07 13:23:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:17,154 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2019-12-07 13:23:17,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:23:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2019-12-07 13:23:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:23:17,155 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:23:17,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:23:17,155 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:23:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:23:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-07 13:23:17,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:23:17,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226016750] [2019-12-07 13:23:17,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:23:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:23:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:23:17,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226016750] [2019-12-07 13:23:17,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:23:17,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:23:17,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826797997] [2019-12-07 13:23:17,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:23:17,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:23:17,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:23:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:23:17,207 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 5 states. [2019-12-07 13:23:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:23:17,217 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 13:23:17,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:23:17,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 13:23:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:23:17,218 INFO L225 Difference]: With dead ends: 21 [2019-12-07 13:23:17,218 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:23:17,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:23:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:23:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:23:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:23:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:23:17,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 13:23:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:23:17,219 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:23:17,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:23:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:23:17,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:23:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:23:17 BasicIcfg [2019-12-07 13:23:17,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:23:17,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:23:17,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:23:17,222 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:23:17,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:23:15" (3/4) ... [2019-12-07 13:23:17,224 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:23:17,228 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:23:17,228 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:23:17,228 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:23:17,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 13:23:17,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:23:17,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:23:17,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e1af8c37-388d-4640-9b42-285aac0b1d5e/bin/utaipan/witness.graphml [2019-12-07 13:23:17,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:23:17,266 INFO L168 Benchmark]: Toolchain (without parser) took 2277.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -79.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:23:17,266 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:23:17,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:23:17,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:23:17,267 INFO L168 Benchmark]: Boogie Preprocessor took 17.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:23:17,268 INFO L168 Benchmark]: RCFGBuilder took 222.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:23:17,268 INFO L168 Benchmark]: TraceAbstraction took 1613.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:23:17,268 INFO L168 Benchmark]: Witness Printer took 42.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:23:17,271 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1613.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Witness Printer took 42.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - 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 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 61 SDslu, 48 SDs, 0 SdLazy, 42 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2746 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...