./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.opt.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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/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 61c36ba3335be4dbf8406139d3018a47ee4afc02 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:20:16,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:16,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:17,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:17,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:17,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:17,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:17,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:17,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:17,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:17,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:17,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:17,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:17,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:17,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:17,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:17,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:17,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:17,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:17,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:17,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:17,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:17,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:17,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:17,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:17,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:17,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:17,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:17,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:17,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:17,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:17,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:17,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:17,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:17,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:17,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:17,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:17,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:17,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:17,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:17,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:17,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:17,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:17,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:17,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:17,222 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:17,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:17,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:17,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:17,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:17,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:17,231 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:17,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:17,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:17,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:17,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:17,234 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:17,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:17,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:17,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:17,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:17,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:17,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:17,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:17,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:17,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:17,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:17,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:17,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:17,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:17,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:17,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:17,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:17,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:17,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:17,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:17,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:17,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:17,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:17,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:17,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:17,244 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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61c36ba3335be4dbf8406139d3018a47ee4afc02 [2021-10-11 02:20:17,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:17,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:17,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:17,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:17,609 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:17,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe026_tso.opt.i [2021-10-11 02:20:17,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/data/001461124/b95c00de0fdf485d979f867135575e0d/FLAG4a61e8f1a [2021-10-11 02:20:18,453 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:18,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/sv-benchmarks/c/pthread-wmm/safe026_tso.opt.i [2021-10-11 02:20:18,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/data/001461124/b95c00de0fdf485d979f867135575e0d/FLAG4a61e8f1a [2021-10-11 02:20:18,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/data/001461124/b95c00de0fdf485d979f867135575e0d [2021-10-11 02:20:18,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:18,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:18,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:18,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:18,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:18,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:18" (1/1) ... [2021-10-11 02:20:18,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e39f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:18, skipping insertion in model container [2021-10-11 02:20:18,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:18" (1/1) ... [2021-10-11 02:20:18,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:18,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:19,028 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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/sv-benchmarks/c/pthread-wmm/safe026_tso.opt.i[949,962] [2021-10-11 02:20:19,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,319 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:19,337 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_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/sv-benchmarks/c/pthread-wmm/safe026_tso.opt.i[949,962] [2021-10-11 02:20:19,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,533 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:19,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19 WrapperNode [2021-10-11 02:20:19,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:19,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:19,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:19,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:19,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:19,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:19,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:19,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:19,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/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 02:20:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:20:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:20:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:20:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:20:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:20:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:20:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:20:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:20:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:20:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:19,770 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 02:20:20,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:20,389 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:20:20,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20 BoogieIcfgContainer [2021-10-11 02:20:20,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:20,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:20,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:20,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:20,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:18" (1/3) ... [2021-10-11 02:20:20,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e6027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (2/3) ... [2021-10-11 02:20:20,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e6027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/3) ... [2021-10-11 02:20:20,405 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-10-11 02:20:20,426 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:20:20,427 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:20,431 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:20,432 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:20:20,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,502 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,511 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,512 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,517 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,517 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,517 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,518 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,528 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:20,533 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:20:20,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:20:20,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:20,590 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:20,590 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:20,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:20,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:20,591 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:20,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:20,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:20,607 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:20:20,609 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:20:20,612 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:20:20,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-10-11 02:20:20,665 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-10-11 02:20:20,665 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:20:20,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-11 02:20:20,673 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-10-11 02:20:23,033 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-10-11 02:20:24,678 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:20:24,802 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:20:25,029 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:20:25,162 INFO L131 LiptonReduction]: Checked pairs total: 2136 [2021-10-11 02:20:25,163 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-10-11 02:20:25,170 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-10-11 02:20:25,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2021-10-11 02:20:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2021-10-11 02:20:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:20:25,221 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:25,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:25,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash -301136603, now seen corresponding path program 1 times [2021-10-11 02:20:25,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:25,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661637021] [2021-10-11 02:20:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:25,572 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 02:20:25,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661637021] [2021-10-11 02:20:25,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:25,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:25,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046560411] [2021-10-11 02:20:25,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:25,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:25,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:25,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:25,617 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2021-10-11 02:20:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:25,706 INFO L93 Difference]: Finished difference Result 340 states and 895 transitions. [2021-10-11 02:20:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:25,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:20:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:25,727 INFO L225 Difference]: With dead ends: 340 [2021-10-11 02:20:25,727 INFO L226 Difference]: Without dead ends: 232 [2021-10-11 02:20:25,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-11 02:20:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2021-10-11 02:20:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-10-11 02:20:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 547 transitions. [2021-10-11 02:20:25,807 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 547 transitions. Word has length 8 [2021-10-11 02:20:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:25,809 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 547 transitions. [2021-10-11 02:20:25,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 547 transitions. [2021-10-11 02:20:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:20:25,811 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:25,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:25,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:25,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash -761965005, now seen corresponding path program 1 times [2021-10-11 02:20:25,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:25,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738244055] [2021-10-11 02:20:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:25,950 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 02:20:25,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738244055] [2021-10-11 02:20:25,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:25,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:25,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188281357] [2021-10-11 02:20:25,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:25,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:25,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:25,955 INFO L87 Difference]: Start difference. First operand 210 states and 547 transitions. Second operand 3 states. [2021-10-11 02:20:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:25,970 INFO L93 Difference]: Finished difference Result 202 states and 521 transitions. [2021-10-11 02:20:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:25,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:20:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:25,979 INFO L225 Difference]: With dead ends: 202 [2021-10-11 02:20:25,979 INFO L226 Difference]: Without dead ends: 202 [2021-10-11 02:20:25,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-11 02:20:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 186. [2021-10-11 02:20:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-10-11 02:20:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2021-10-11 02:20:26,013 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 9 [2021-10-11 02:20:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,014 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2021-10-11 02:20:26,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2021-10-11 02:20:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:20:26,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:26,016 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -745317602, now seen corresponding path program 1 times [2021-10-11 02:20:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643103311] [2021-10-11 02:20:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,085 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 02:20:26,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643103311] [2021-10-11 02:20:26,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:26,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971797461] [2021-10-11 02:20:26,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:26,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:26,088 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 3 states. [2021-10-11 02:20:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,100 INFO L93 Difference]: Finished difference Result 180 states and 463 transitions. [2021-10-11 02:20:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:26,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:20:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,103 INFO L225 Difference]: With dead ends: 180 [2021-10-11 02:20:26,104 INFO L226 Difference]: Without dead ends: 180 [2021-10-11 02:20:26,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-11 02:20:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-11 02:20:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-10-11 02:20:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 463 transitions. [2021-10-11 02:20:26,124 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 463 transitions. Word has length 9 [2021-10-11 02:20:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,124 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 463 transitions. [2021-10-11 02:20:26,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 463 transitions. [2021-10-11 02:20:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:20:26,126 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:26,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2146096176, now seen corresponding path program 1 times [2021-10-11 02:20:26,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991018037] [2021-10-11 02:20:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,257 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 02:20:26,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991018037] [2021-10-11 02:20:26,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:26,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089660366] [2021-10-11 02:20:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:26,261 INFO L87 Difference]: Start difference. First operand 180 states and 463 transitions. Second operand 4 states. [2021-10-11 02:20:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,307 INFO L93 Difference]: Finished difference Result 209 states and 490 transitions. [2021-10-11 02:20:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:20:26,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:20:26,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,310 INFO L225 Difference]: With dead ends: 209 [2021-10-11 02:20:26,310 INFO L226 Difference]: Without dead ends: 151 [2021-10-11 02:20:26,310 INFO L677 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 [2021-10-11 02:20:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-11 02:20:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-10-11 02:20:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-10-11 02:20:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 348 transitions. [2021-10-11 02:20:26,332 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 348 transitions. Word has length 10 [2021-10-11 02:20:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 348 transitions. [2021-10-11 02:20:26,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 348 transitions. [2021-10-11 02:20:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:20:26,336 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:26,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1675797027, now seen corresponding path program 1 times [2021-10-11 02:20:26,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032157920] [2021-10-11 02:20:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,480 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 02:20:26,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032157920] [2021-10-11 02:20:26,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:26,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070043558] [2021-10-11 02:20:26,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:20:26,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:20:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:26,486 INFO L87 Difference]: Start difference. First operand 151 states and 348 transitions. Second operand 5 states. [2021-10-11 02:20:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,550 INFO L93 Difference]: Finished difference Result 148 states and 315 transitions. [2021-10-11 02:20:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:20:26,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:20:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,552 INFO L225 Difference]: With dead ends: 148 [2021-10-11 02:20:26,553 INFO L226 Difference]: Without dead ends: 111 [2021-10-11 02:20:26,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-11 02:20:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-11 02:20:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 02:20:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 225 transitions. [2021-10-11 02:20:26,575 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 225 transitions. Word has length 11 [2021-10-11 02:20:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,575 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 225 transitions. [2021-10-11 02:20:26,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:20:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 225 transitions. [2021-10-11 02:20:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:20:26,577 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:26,577 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 170235503, now seen corresponding path program 1 times [2021-10-11 02:20:26,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32704111] [2021-10-11 02:20:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,709 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 02:20:26,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32704111] [2021-10-11 02:20:26,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:26,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882259319] [2021-10-11 02:20:26,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:20:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:20:26,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:26,714 INFO L87 Difference]: Start difference. First operand 109 states and 225 transitions. Second operand 6 states. [2021-10-11 02:20:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,784 INFO L93 Difference]: Finished difference Result 103 states and 211 transitions. [2021-10-11 02:20:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:20:26,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:20:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,787 INFO L225 Difference]: With dead ends: 103 [2021-10-11 02:20:26,787 INFO L226 Difference]: Without dead ends: 84 [2021-10-11 02:20:26,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-11 02:20:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-10-11 02:20:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:20:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2021-10-11 02:20:26,797 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 13 [2021-10-11 02:20:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,798 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2021-10-11 02:20:26,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:20:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2021-10-11 02:20:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:26,806 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:26,807 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -523743225, now seen corresponding path program 1 times [2021-10-11 02:20:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029269536] [2021-10-11 02:20:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,947 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 02:20:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029269536] [2021-10-11 02:20:26,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:26,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488151252] [2021-10-11 02:20:26,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:26,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:26,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:26,951 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand 4 states. [2021-10-11 02:20:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,006 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2021-10-11 02:20:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:20:27,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:20:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:27,008 INFO L225 Difference]: With dead ends: 105 [2021-10-11 02:20:27,008 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 02:20:27,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 02:20:27,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-10-11 02:20:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:20:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2021-10-11 02:20:27,014 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 16 [2021-10-11 02:20:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:27,019 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2021-10-11 02:20:27,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2021-10-11 02:20:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:27,020 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:27,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:27,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:20:27,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1399962537, now seen corresponding path program 2 times [2021-10-11 02:20:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:27,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364723839] [2021-10-11 02:20:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:27,140 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 02:20:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364723839] [2021-10-11 02:20:27,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:27,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:27,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283790183] [2021-10-11 02:20:27,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:20:27,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:20:27,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:27,143 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 5 states. [2021-10-11 02:20:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,173 INFO L93 Difference]: Finished difference Result 59 states and 96 transitions. [2021-10-11 02:20:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:20:27,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:20:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:27,174 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:20:27,174 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:20:27,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:20:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:20:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:20:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-10-11 02:20:27,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 16 [2021-10-11 02:20:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:27,178 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-10-11 02:20:27,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:20:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-10-11 02:20:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:27,179 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:27,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:27,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:20:27,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2077613865, now seen corresponding path program 3 times [2021-10-11 02:20:27,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:27,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135456348] [2021-10-11 02:20:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:27,257 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 02:20:27,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135456348] [2021-10-11 02:20:27,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:27,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:27,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873329894] [2021-10-11 02:20:27,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:20:27,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:27,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:20:27,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:27,260 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2021-10-11 02:20:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,280 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-10-11 02:20:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:27,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:20:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:27,281 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:20:27,281 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:27,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:27,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:20:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:27,283 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:27,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:20:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:27,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:27,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:20:27,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:27 BasicIcfg [2021-10-11 02:20:27,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:27,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:27,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:27,287 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:27,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/4) ... [2021-10-11 02:20:27,292 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:27,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:20:27,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:20:27,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:20:27,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:20:27,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:20:27,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:27,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:27,381 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a98ec-ea74-4d62-8657-ebaa74f8f2dc/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:27,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:27,386 INFO L168 Benchmark]: Toolchain (without parser) took 8741.46 ms. Allocated memory was 94.4 MB in the beginning and 163.6 MB in the end (delta: 69.2 MB). Free memory was 65.4 MB in the beginning and 97.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,389 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:27,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 889.40 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 49.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.19 ms. Allocated memory is still 94.4 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,391 INFO L168 Benchmark]: Boogie Preprocessor took 33.95 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:27,394 INFO L168 Benchmark]: RCFGBuilder took 738.36 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 46.6 MB in the beginning and 75.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,395 INFO L168 Benchmark]: TraceAbstraction took 6890.79 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.8 MB in the beginning and 100.7 MB in the end (delta: -25.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,395 INFO L168 Benchmark]: Witness Printer took 94.93 ms. Allocated memory is still 163.6 MB. Free memory was 100.7 MB in the beginning and 97.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:27,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 889.40 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 49.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.19 ms. Allocated memory is still 94.4 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.95 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 738.36 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 46.6 MB in the beginning and 75.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6890.79 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.8 MB in the beginning and 100.7 MB in the end (delta: -25.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 94.93 ms. Allocated memory is still 163.6 MB. Free memory was 100.7 MB in the beginning and 97.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 769 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 2136 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 158 SDtfs, 148 SDslu, 174 SDs, 0 SdLazy, 113 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 52 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 5285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...