./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52315eb9eba8de3abab2d7efcb9768ac0b90d6f3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:33,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:33,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:33,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:33,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:33,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:33,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:33,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:33,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:33,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:33,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:33,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:33,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:33,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:33,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:33,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:33,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:33,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:33,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:33,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:33,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:33,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:33,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:33,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:33,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:33,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:33,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:33,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:33,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:33,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:33,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:33,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:33,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:33,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:33,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:33,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:33,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:33,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:33,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:33,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:33,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:33,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:33,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:33,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:33,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:33,995 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:33,995 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:33,995 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:33,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:33,996 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:33,996 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:33,996 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:33,996 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:33,996 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:33,997 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:33,997 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:33,997 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:33,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:33,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:33,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:33,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:33,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:33,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:33,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:33,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:33,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:33,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:34,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:34,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:34,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:34,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:34,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:34,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:34,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:34,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:34,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:34,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:34,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:34,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:34,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:34,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:34,002 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52315eb9eba8de3abab2d7efcb9768ac0b90d6f3 [2021-10-11 02:31:34,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:34,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:34,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:34,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:34,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:34,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2021-10-11 02:31:34,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/data/e9f5bbbfa/be8655055434427780512bc61aa463bb/FLAG665777595 [2021-10-11 02:31:35,042 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:35,043 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2021-10-11 02:31:35,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/data/e9f5bbbfa/be8655055434427780512bc61aa463bb/FLAG665777595 [2021-10-11 02:31:35,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/data/e9f5bbbfa/be8655055434427780512bc61aa463bb [2021-10-11 02:31:35,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:35,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:35,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:35,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:35,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:35,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:35,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ffb69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35, skipping insertion in model container [2021-10-11 02:31:35,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:35,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:35,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:35,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i[950,963] [2021-10-11 02:31:35,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:35,782 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:35,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i[950,963] [2021-10-11 02:31:35,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:35,954 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:35,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35 WrapperNode [2021-10-11 02:31:35,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:35,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:35,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:35,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:35,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:36,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:36,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:36,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:36,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... [2021-10-11 02:31:36,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:36,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:36,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:36,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:36,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:31:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:31:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:31:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:31:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:31:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:31:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:31:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:31:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:36,177 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:31:36,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:36,546 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:31:36,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:36 BoogieIcfgContainer [2021-10-11 02:31:36,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:36,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:36,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:36,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:35" (1/3) ... [2021-10-11 02:31:36,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d8447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:36, skipping insertion in model container [2021-10-11 02:31:36,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:35" (2/3) ... [2021-10-11 02:31:36,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d8447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:36, skipping insertion in model container [2021-10-11 02:31:36,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:36" (3/3) ... [2021-10-11 02:31:36,571 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2021-10-11 02:31:36,602 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:31:36,602 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:36,605 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:36,606 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:31:36,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,650 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,650 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:36,661 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:31:36,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:31:36,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:36,710 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:36,710 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:36,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:36,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:36,716 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:36,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:36,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:36,730 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:31:36,733 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2021-10-11 02:31:36,736 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2021-10-11 02:31:36,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-10-11 02:31:36,782 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-10-11 02:31:36,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:31:36,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-11 02:31:36,788 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-10-11 02:31:39,266 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:31:39,553 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:31:39,662 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2021-10-11 02:31:39,662 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-10-11 02:31:39,668 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2021-10-11 02:31:39,679 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2021-10-11 02:31:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-10-11 02:31:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:31:39,687 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:39,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:31:39,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2021-10-11 02:31:39,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:39,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841181275] [2021-10-11 02:31:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:39,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841181275] [2021-10-11 02:31:39,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:39,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:39,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738447712] [2021-10-11 02:31:39,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:31:39,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:39,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:31:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:39,903 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2021-10-11 02:31:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:39,928 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2021-10-11 02:31:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:31:39,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:31:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:39,944 INFO L225 Difference]: With dead ends: 90 [2021-10-11 02:31:39,947 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:31:39,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:31:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:31:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:31:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2021-10-11 02:31:40,000 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2021-10-11 02:31:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:40,001 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2021-10-11 02:31:40,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:31:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2021-10-11 02:31:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:31:40,008 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:40,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:40,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:40,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2021-10-11 02:31:40,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:40,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808753703] [2021-10-11 02:31:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:40,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808753703] [2021-10-11 02:31:40,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:40,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:40,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778137767] [2021-10-11 02:31:40,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:40,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:40,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:40,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:40,207 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2021-10-11 02:31:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:40,242 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-10-11 02:31:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:40,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:31:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:40,246 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:31:40,246 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:31:40,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:31:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 02:31:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:31:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2021-10-11 02:31:40,262 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2021-10-11 02:31:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:40,262 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2021-10-11 02:31:40,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2021-10-11 02:31:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:31:40,264 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:40,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:40,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:40,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:40,265 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2021-10-11 02:31:40,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:40,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915837012] [2021-10-11 02:31:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:40,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915837012] [2021-10-11 02:31:40,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:40,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:40,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936473477] [2021-10-11 02:31:40,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:40,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:40,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:40,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:40,413 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2021-10-11 02:31:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:40,450 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2021-10-11 02:31:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:40,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:31:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:40,452 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:31:40,452 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:31:40,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:31:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:31:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:31:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-10-11 02:31:40,456 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2021-10-11 02:31:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-10-11 02:31:40,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2021-10-11 02:31:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:31:40,457 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:40,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:40,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:31:40,457 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2021-10-11 02:31:40,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:40,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362346670] [2021-10-11 02:31:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:40,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362346670] [2021-10-11 02:31:40,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:40,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:40,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424396081] [2021-10-11 02:31:40,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:40,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:40,558 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2021-10-11 02:31:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:40,588 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-10-11 02:31:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:40,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:31:40,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:40,589 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:31:40,589 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:31:40,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:31:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:31:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:31:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 02:31:40,594 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2021-10-11 02:31:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:40,595 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 02:31:40,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 02:31:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:31:40,597 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:40,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:40,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:31:40,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2021-10-11 02:31:40,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:40,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775009244] [2021-10-11 02:31:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775009244] [2021-10-11 02:31:40,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:40,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:40,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10734923] [2021-10-11 02:31:40,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:40,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:40,679 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2021-10-11 02:31:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:40,728 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-11 02:31:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:40,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:31:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:40,729 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:31:40,729 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:40,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:40,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-11 02:31:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:40,730 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:40,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:40,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:40,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:31:40,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:40 BasicIcfg [2021-10-11 02:31:40,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:40,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:40,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:40,735 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:40,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:36" (3/4) ... [2021-10-11 02:31:40,738 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:40,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:31:40,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:31:40,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:31:40,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:31:40,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:40,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:40,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a39c85-0999-43d1-a74c-c64c6a52da0b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:40,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:40,825 INFO L168 Benchmark]: Toolchain (without parser) took 5527.30 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 52.2 MB in the beginning and 106.2 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:40,825 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:40,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.79 ms. Allocated memory is still 94.4 MB. Free memory was 52.0 MB in the beginning and 48.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:40,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.72 ms. Allocated memory is still 94.4 MB. Free memory was 48.3 MB in the beginning and 46.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:40,827 INFO L168 Benchmark]: Boogie Preprocessor took 50.31 ms. Allocated memory is still 94.4 MB. Free memory was 46.2 MB in the beginning and 45.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:40,831 INFO L168 Benchmark]: RCFGBuilder took 472.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 44.9 MB in the beginning and 82.2 MB in the end (delta: -37.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:40,837 INFO L168 Benchmark]: TraceAbstraction took 4184.25 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 82.2 MB in the beginning and 109.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:40,837 INFO L168 Benchmark]: Witness Printer took 89.17 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 106.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:40,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.79 ms. Allocated memory is still 94.4 MB. Free memory was 52.0 MB in the beginning and 48.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.72 ms. Allocated memory is still 94.4 MB. Free memory was 48.3 MB in the beginning and 46.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.31 ms. Allocated memory is still 94.4 MB. Free memory was 46.2 MB in the beginning and 45.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 472.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 44.9 MB in the beginning and 82.2 MB in the end (delta: -37.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4184.25 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 82.2 MB in the beginning and 109.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 16.1 GB. * Witness Printer took 89.17 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 106.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 82 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...