./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/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 fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:21:36,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:36,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:36,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:36,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:36,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:36,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:36,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:36,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:36,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:36,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:36,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:36,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:36,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:36,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:36,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:36,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:36,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:36,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:36,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:36,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:36,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:36,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:36,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:36,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:36,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:36,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:36,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:36,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:36,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:36,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:36,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:36,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:36,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:36,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:36,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:36,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:36,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:36,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:36,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:36,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:36,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:36,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:36,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:36,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:36,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:36,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:36,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:36,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:36,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:36,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:36,202 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:36,202 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:36,202 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:36,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:36,203 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:36,203 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:36,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:36,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:36,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:36,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:36,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:36,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:36,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:36,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:36,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:36,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:36,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:36,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:36,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:36,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:36,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:36,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:36,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:36,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:36,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:36,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:36,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:36,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:36,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:36,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:36,210 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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 [2021-10-11 02:21:36,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:36,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:36,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:36,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:36,521 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:36,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2021-10-11 02:21:36,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/data/a898bf570/85db6f7ef05943ea96e6c76108b963cc/FLAG523c7c9fb [2021-10-11 02:21:37,110 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:37,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2021-10-11 02:21:37,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/data/a898bf570/85db6f7ef05943ea96e6c76108b963cc/FLAG523c7c9fb [2021-10-11 02:21:37,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/data/a898bf570/85db6f7ef05943ea96e6c76108b963cc [2021-10-11 02:21:37,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:37,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:37,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:37,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:37,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:37,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:37" (1/1) ... [2021-10-11 02:21:37,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3dcbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:37, skipping insertion in model container [2021-10-11 02:21:37,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:37" (1/1) ... [2021-10-11 02:21:37,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:37,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:37,694 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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-10-11 02:21:37,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:37,924 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:37,938 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_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-10-11 02:21:37,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:38,081 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:38,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38 WrapperNode [2021-10-11 02:21:38,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:38,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:38,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:38,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:38,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:38,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:38,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:38,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:38,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:38,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:38,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:38,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:38,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/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 02:21:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:21:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:21:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:21:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:21:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:21:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:21:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:21:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:21:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:21:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-11 02:21:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-11 02:21:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:21:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:38,225 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 02:21:38,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:38,668 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:21:38,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38 BoogieIcfgContainer [2021-10-11 02:21:38,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:38,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:38,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:38,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:37" (1/3) ... [2021-10-11 02:21:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6aa15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:38, skipping insertion in model container [2021-10-11 02:21:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (2/3) ... [2021-10-11 02:21:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6aa15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:38, skipping insertion in model container [2021-10-11 02:21:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38" (3/3) ... [2021-10-11 02:21:38,682 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2021-10-11 02:21:38,704 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:21:38,705 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:38,707 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:38,708 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:21:38,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,743 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,743 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,743 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,743 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,744 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,744 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,744 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,744 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,752 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,755 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,755 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:38,759 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:21:38,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:21:38,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:38,791 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:38,791 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:38,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:38,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:38,792 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:38,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:38,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:38,805 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:21:38,806 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2021-10-11 02:21:38,809 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2021-10-11 02:21:38,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-10-11 02:21:38,857 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-10-11 02:21:38,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:21:38,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-11 02:21:38,866 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2021-10-11 02:21:41,624 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-10-11 02:21:42,179 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:21:42,290 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-10-11 02:21:42,537 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:21:42,632 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2021-10-11 02:21:42,632 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-11 02:21:42,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2021-10-11 02:21:42,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2021-10-11 02:21:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2021-10-11 02:21:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:21:42,739 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:42,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2021-10-11 02:21:42,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:42,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471940991] [2021-10-11 02:21:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,963 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 02:21:42,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471940991] [2021-10-11 02:21:42,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:42,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661869932] [2021-10-11 02:21:42,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:42,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:42,993 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2021-10-11 02:21:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,086 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2021-10-11 02:21:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:43,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:21:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,139 INFO L225 Difference]: With dead ends: 1450 [2021-10-11 02:21:43,140 INFO L226 Difference]: Without dead ends: 1194 [2021-10-11 02:21:43,142 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 02:21:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-11 02:21:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2021-10-11 02:21:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2021-10-11 02:21:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2021-10-11 02:21:43,291 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2021-10-11 02:21:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,292 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2021-10-11 02:21:43,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2021-10-11 02:21:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:21:43,295 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:43,296 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2021-10-11 02:21:43,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126279679] [2021-10-11 02:21:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,478 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 02:21:43,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126279679] [2021-10-11 02:21:43,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:43,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408476969] [2021-10-11 02:21:43,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:43,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:43,482 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2021-10-11 02:21:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,551 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2021-10-11 02:21:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:43,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:21:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,565 INFO L225 Difference]: With dead ends: 1448 [2021-10-11 02:21:43,565 INFO L226 Difference]: Without dead ends: 1192 [2021-10-11 02:21:43,566 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 02:21:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-10-11 02:21:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2021-10-11 02:21:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2021-10-11 02:21:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2021-10-11 02:21:43,621 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2021-10-11 02:21:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,621 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2021-10-11 02:21:43,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2021-10-11 02:21:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:43,624 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:43,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,625 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2021-10-11 02:21:43,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119639973] [2021-10-11 02:21:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,718 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 02:21:43,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119639973] [2021-10-11 02:21:43,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:43,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210927396] [2021-10-11 02:21:43,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:43,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:43,725 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2021-10-11 02:21:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,815 INFO L93 Difference]: Finished difference Result 1318 states and 4624 transitions. [2021-10-11 02:21:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:43,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:21:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,827 INFO L225 Difference]: With dead ends: 1318 [2021-10-11 02:21:43,827 INFO L226 Difference]: Without dead ends: 1066 [2021-10-11 02:21:43,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-11 02:21:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-10-11 02:21:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2021-10-11 02:21:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2021-10-11 02:21:43,881 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 12 [2021-10-11 02:21:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,882 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2021-10-11 02:21:43,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2021-10-11 02:21:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:43,884 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:43,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -861902487, now seen corresponding path program 1 times [2021-10-11 02:21:43,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661580858] [2021-10-11 02:21:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,987 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 02:21:43,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661580858] [2021-10-11 02:21:43,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:43,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078585441] [2021-10-11 02:21:43,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:43,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:44,001 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2021-10-11 02:21:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,116 INFO L93 Difference]: Finished difference Result 1819 states and 6368 transitions. [2021-10-11 02:21:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:44,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:21:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,130 INFO L225 Difference]: With dead ends: 1819 [2021-10-11 02:21:44,130 INFO L226 Difference]: Without dead ends: 1276 [2021-10-11 02:21:44,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-10-11 02:21:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1276. [2021-10-11 02:21:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2021-10-11 02:21:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4536 transitions. [2021-10-11 02:21:44,198 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4536 transitions. Word has length 12 [2021-10-11 02:21:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,199 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 4536 transitions. [2021-10-11 02:21:44,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4536 transitions. [2021-10-11 02:21:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:21:44,201 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:44,202 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash -950335427, now seen corresponding path program 1 times [2021-10-11 02:21:44,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127366374] [2021-10-11 02:21:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,319 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 02:21:44,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127366374] [2021-10-11 02:21:44,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:44,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973655288] [2021-10-11 02:21:44,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:44,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:44,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:44,323 INFO L87 Difference]: Start difference. First operand 1276 states and 4536 transitions. Second operand 5 states. [2021-10-11 02:21:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,440 INFO L93 Difference]: Finished difference Result 2281 states and 7855 transitions. [2021-10-11 02:21:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:44,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:21:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,459 INFO L225 Difference]: With dead ends: 2281 [2021-10-11 02:21:44,459 INFO L226 Difference]: Without dead ends: 1840 [2021-10-11 02:21:44,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-10-11 02:21:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1264. [2021-10-11 02:21:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2021-10-11 02:21:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 4447 transitions. [2021-10-11 02:21:44,569 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 4447 transitions. Word has length 13 [2021-10-11 02:21:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,570 INFO L481 AbstractCegarLoop]: Abstraction has 1264 states and 4447 transitions. [2021-10-11 02:21:44,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 4447 transitions. [2021-10-11 02:21:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:21:44,572 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:21:44,573 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,573 INFO L82 PathProgramCache]: Analyzing trace with hash -950246054, now seen corresponding path program 1 times [2021-10-11 02:21:44,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769311415] [2021-10-11 02:21:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,684 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 02:21:44,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769311415] [2021-10-11 02:21:44,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:44,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376658627] [2021-10-11 02:21:44,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:44,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:44,687 INFO L87 Difference]: Start difference. First operand 1264 states and 4447 transitions. Second operand 5 states. [2021-10-11 02:21:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,739 INFO L93 Difference]: Finished difference Result 1354 states and 4639 transitions. [2021-10-11 02:21:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:44,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:21:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,751 INFO L225 Difference]: With dead ends: 1354 [2021-10-11 02:21:44,751 INFO L226 Difference]: Without dead ends: 1174 [2021-10-11 02:21:44,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-10-11 02:21:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1084. [2021-10-11 02:21:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2021-10-11 02:21:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3766 transitions. [2021-10-11 02:21:44,800 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3766 transitions. Word has length 13 [2021-10-11 02:21:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,801 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 3766 transitions. [2021-10-11 02:21:44,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3766 transitions. [2021-10-11 02:21:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:21:44,804 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:21:44,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,806 INFO L82 PathProgramCache]: Analyzing trace with hash 128736516, now seen corresponding path program 1 times [2021-10-11 02:21:44,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896393169] [2021-10-11 02:21:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,871 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 02:21:44,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896393169] [2021-10-11 02:21:44,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:44,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663904536] [2021-10-11 02:21:44,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:44,874 INFO L87 Difference]: Start difference. First operand 1084 states and 3766 transitions. Second operand 6 states. [2021-10-11 02:21:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,937 INFO L93 Difference]: Finished difference Result 1309 states and 4471 transitions. [2021-10-11 02:21:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:44,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:21:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,944 INFO L225 Difference]: With dead ends: 1309 [2021-10-11 02:21:44,944 INFO L226 Difference]: Without dead ends: 682 [2021-10-11 02:21:44,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-10-11 02:21:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2021-10-11 02:21:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2021-10-11 02:21:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2240 transitions. [2021-10-11 02:21:44,972 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2240 transitions. Word has length 14 [2021-10-11 02:21:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 2240 transitions. [2021-10-11 02:21:44,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2240 transitions. [2021-10-11 02:21:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:21:44,974 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:21:44,975 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash 100524439, now seen corresponding path program 1 times [2021-10-11 02:21:44,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279015585] [2021-10-11 02:21:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,034 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 02:21:45,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279015585] [2021-10-11 02:21:45,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:45,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841083630] [2021-10-11 02:21:45,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:45,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:45,037 INFO L87 Difference]: Start difference. First operand 682 states and 2240 transitions. Second operand 6 states. [2021-10-11 02:21:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,095 INFO L93 Difference]: Finished difference Result 874 states and 2784 transitions. [2021-10-11 02:21:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:45,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:21:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,099 INFO L225 Difference]: With dead ends: 874 [2021-10-11 02:21:45,100 INFO L226 Difference]: Without dead ends: 394 [2021-10-11 02:21:45,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-11 02:21:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-10-11 02:21:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-10-11 02:21:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1168 transitions. [2021-10-11 02:21:45,135 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1168 transitions. Word has length 14 [2021-10-11 02:21:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,135 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1168 transitions. [2021-10-11 02:21:45,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1168 transitions. [2021-10-11 02:21:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:21:45,136 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:21:45,137 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1364189748, now seen corresponding path program 1 times [2021-10-11 02:21:45,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038311971] [2021-10-11 02:21:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,194 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 02:21:45,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038311971] [2021-10-11 02:21:45,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:45,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881826962] [2021-10-11 02:21:45,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:45,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:45,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:45,197 INFO L87 Difference]: Start difference. First operand 394 states and 1168 transitions. Second operand 6 states. [2021-10-11 02:21:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,248 INFO L93 Difference]: Finished difference Result 526 states and 1504 transitions. [2021-10-11 02:21:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:45,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 02:21:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,250 INFO L225 Difference]: With dead ends: 526 [2021-10-11 02:21:45,251 INFO L226 Difference]: Without dead ends: 214 [2021-10-11 02:21:45,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-11 02:21:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-10-11 02:21:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 02:21:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 566 transitions. [2021-10-11 02:21:45,259 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 566 transitions. Word has length 16 [2021-10-11 02:21:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,259 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 566 transitions. [2021-10-11 02:21:45,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 566 transitions. [2021-10-11 02:21:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:21:45,260 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:21:45,261 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1493234184, now seen corresponding path program 1 times [2021-10-11 02:21:45,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881547773] [2021-10-11 02:21:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,317 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 02:21:45,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881547773] [2021-10-11 02:21:45,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:45,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111805536] [2021-10-11 02:21:45,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:45,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:45,319 INFO L87 Difference]: Start difference. First operand 214 states and 566 transitions. Second operand 6 states. [2021-10-11 02:21:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,360 INFO L93 Difference]: Finished difference Result 190 states and 490 transitions. [2021-10-11 02:21:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:45,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-10-11 02:21:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,362 INFO L225 Difference]: With dead ends: 190 [2021-10-11 02:21:45,362 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:45,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:45,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 02:21:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,365 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:45,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:45,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:45,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:45,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:45 BasicIcfg [2021-10-11 02:21:45,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:45,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:45,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:45,369 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:45,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38" (3/4) ... [2021-10-11 02:21:45,373 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:45,382 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:21:45,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:21:45,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:21:45,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-11 02:21:45,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 02:21:45,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:21:45,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:45,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:45,445 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0eb5fa-1f44-4aed-bb15-db2248c0912a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:45,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:45,446 INFO L168 Benchmark]: Toolchain (without parser) took 8002.52 ms. Allocated memory was 111.1 MB in the beginning and 205.5 MB in the end (delta: 94.4 MB). Free memory was 69.3 MB in the beginning and 126.7 MB in the end (delta: -57.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,447 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 86.9 MB in the end (delta: 62.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:45,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.07 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 65.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 111.1 MB. Free memory was 65.1 MB in the beginning and 63.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,448 INFO L168 Benchmark]: Boogie Preprocessor took 26.64 ms. Allocated memory is still 111.1 MB. Free memory was 63.0 MB in the beginning and 61.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,449 INFO L168 Benchmark]: RCFGBuilder took 517.36 ms. Allocated memory is still 111.1 MB. Free memory was 61.5 MB in the beginning and 80.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,450 INFO L168 Benchmark]: TraceAbstraction took 6697.50 ms. Allocated memory was 111.1 MB in the beginning and 205.5 MB in the end (delta: 94.4 MB). Free memory was 80.9 MB in the beginning and 129.8 MB in the end (delta: -48.9 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,450 INFO L168 Benchmark]: Witness Printer took 75.86 ms. Allocated memory is still 205.5 MB. Free memory was 128.8 MB in the beginning and 126.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 86.9 MB in the end (delta: 62.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 637.07 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 65.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 111.1 MB. Free memory was 65.1 MB in the beginning and 63.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.64 ms. Allocated memory is still 111.1 MB. Free memory was 63.0 MB in the beginning and 61.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 517.36 ms. Allocated memory is still 111.1 MB. Free memory was 61.5 MB in the beginning and 80.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6697.50 ms. Allocated memory was 111.1 MB in the beginning and 205.5 MB in the end (delta: 94.4 MB). Free memory was 80.9 MB in the beginning and 129.8 MB in the end (delta: -48.9 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. * Witness Printer took 75.86 ms. Allocated memory is still 205.5 MB. Free memory was 128.8 MB in the beginning and 126.7 MB in the end (delta: 2.1 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 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 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 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 319 SDtfs, 469 SDslu, 573 SDs, 0 SdLazy, 128 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 666 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 9537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...