./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan --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 37f367aa306d4413b86571ec4edcd77d82ad4344 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:26:07,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:26:07,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:26:07,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:26:07,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:26:07,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:26:07,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:26:07,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:26:07,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:26:07,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:26:07,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:26:07,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:26:07,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:26:07,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:26:07,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:26:07,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:26:07,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:26:07,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:26:07,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:26:07,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:26:07,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:26:07,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:26:07,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:26:07,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:26:07,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:26:07,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:26:07,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:26:07,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:26:07,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:26:07,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:26:07,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:26:07,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:26:07,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:26:07,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:26:07,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:26:07,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:26:07,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:26:07,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:26:07,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:26:07,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:26:07,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:26:07,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:26:07,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:26:07,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:26:07,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:26:07,118 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:26:07,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:26:07,119 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:26:07,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:26:07,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:26:07,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:26:07,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:26:07,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:26:07,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:26:07,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:26:07,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:26:07,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:26:07,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:26:07,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:26:07,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:26:07,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:26:07,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:26:07,123 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-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f367aa306d4413b86571ec4edcd77d82ad4344 [2020-12-09 20:26:07,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:26:07,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:26:07,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:26:07,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:26:07,319 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:26:07,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2020-12-09 20:26:07,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/data/785b28cfd/de57eebe34134423b5606a7859617218/FLAG0fa2e0336 [2020-12-09 20:26:07,772 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:26:07,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2020-12-09 20:26:07,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/data/785b28cfd/de57eebe34134423b5606a7859617218/FLAG0fa2e0336 [2020-12-09 20:26:07,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/data/785b28cfd/de57eebe34134423b5606a7859617218 [2020-12-09 20:26:07,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:26:07,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:26:07,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:26:07,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:26:07,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:26:07,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:26:07" (1/1) ... [2020-12-09 20:26:07,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b71ba40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:07, skipping insertion in model container [2020-12-09 20:26:07,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:26:07" (1/1) ... [2020-12-09 20:26:07,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:26:07,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:26:07,941 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i[949,962] [2020-12-09 20:26:08,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:26:08,045 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:26:08,054 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i[949,962] [2020-12-09 20:26:08,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:26:08,135 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:26:08,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08 WrapperNode [2020-12-09 20:26:08,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:26:08,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:26:08,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:26:08,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:26:08,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:26:08,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:26:08,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:26:08,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:26:08,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... [2020-12-09 20:26:08,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:26:08,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:26:08,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:26:08,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:26:08,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:26:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 20:26:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 20:26:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:26:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:26:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 20:26:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 20:26:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 20:26:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 20:26:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 20:26:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 20:26:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:26:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 20:26:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:26:08,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:26:08,277 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 20:26:08,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:26:08,508 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 20:26:08,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:26:08 BoogieIcfgContainer [2020-12-09 20:26:08,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:26:08,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:26:08,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:26:08,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:26:08,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:26:07" (1/3) ... [2020-12-09 20:26:08,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a73f03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:26:08, skipping insertion in model container [2020-12-09 20:26:08,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:26:08" (2/3) ... [2020-12-09 20:26:08,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a73f03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:26:08, skipping insertion in model container [2020-12-09 20:26:08,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:26:08" (3/3) ... [2020-12-09 20:26:08,515 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-12-09 20:26:08,525 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 20:26:08,525 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:26:08,527 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:26:08,528 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 20:26:08,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:26:08,563 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 20:26:08,571 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 20:26:08,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:26:08,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:26:08,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:26:08,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:26:08,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:26:08,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:26:08,585 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:26:08,585 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:26:08,593 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 20:26:08,595 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 20:26:08,597 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 20:26:08,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-09 20:26:08,627 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-09 20:26:08,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 20:26:08,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 20:26:08,632 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 20:26:10,302 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 20:26:10,486 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 20:26:10,553 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2020-12-09 20:26:10,554 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 20:26:10,558 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 20:26:10,577 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 20:26:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 20:26:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:26:10,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:10,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:10,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2020-12-09 20:26:10,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:10,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507457411] [2020-12-09 20:26:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:10,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507457411] [2020-12-09 20:26:10,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:10,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:26:10,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033041096] [2020-12-09 20:26:10,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:26:10,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:26:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:26:10,716 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 20:26:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:10,737 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 20:26:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:26:10,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 20:26:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:10,752 INFO L225 Difference]: With dead ends: 362 [2020-12-09 20:26:10,752 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 20:26:10,753 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 [2020-12-09 20:26:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 20:26:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 20:26:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 20:26:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 20:26:10,810 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 20:26:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:10,811 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 20:26:10,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:26:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 20:26:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 20:26:10,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:10,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:10,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:26:10,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:10,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:10,813 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2020-12-09 20:26:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:10,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121468578] [2020-12-09 20:26:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:10,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121468578] [2020-12-09 20:26:10,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:10,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:26:10,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740576551] [2020-12-09 20:26:10,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:26:10,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:26:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:26:10,917 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 20:26:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:10,955 INFO L93 Difference]: Finished difference Result 541 states and 1484 transitions. [2020-12-09 20:26:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:26:10,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 20:26:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:10,959 INFO L225 Difference]: With dead ends: 541 [2020-12-09 20:26:10,959 INFO L226 Difference]: Without dead ends: 410 [2020-12-09 20:26:10,960 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 [2020-12-09 20:26:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-12-09 20:26:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 340. [2020-12-09 20:26:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-09 20:26:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 937 transitions. [2020-12-09 20:26:10,982 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 937 transitions. Word has length 9 [2020-12-09 20:26:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:10,982 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 937 transitions. [2020-12-09 20:26:10,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:26:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 937 transitions. [2020-12-09 20:26:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 20:26:10,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:10,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:10,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:26:10,984 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2020-12-09 20:26:10,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:10,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145844080] [2020-12-09 20:26:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145844080] [2020-12-09 20:26:11,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:26:11,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210404105] [2020-12-09 20:26:11,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,041 INFO L87 Difference]: Start difference. First operand 340 states and 937 transitions. Second operand 5 states. [2020-12-09 20:26:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,079 INFO L93 Difference]: Finished difference Result 455 states and 1174 transitions. [2020-12-09 20:26:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 20:26:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,082 INFO L225 Difference]: With dead ends: 455 [2020-12-09 20:26:11,082 INFO L226 Difference]: Without dead ends: 366 [2020-12-09 20:26:11,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-12-09 20:26:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 294. [2020-12-09 20:26:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-09 20:26:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 797 transitions. [2020-12-09 20:26:11,099 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 797 transitions. Word has length 10 [2020-12-09 20:26:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,099 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 797 transitions. [2020-12-09 20:26:11,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 797 transitions. [2020-12-09 20:26:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:26:11,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 20:26:11,102 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 996933044, now seen corresponding path program 1 times [2020-12-09 20:26:11,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230113676] [2020-12-09 20:26:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230113676] [2020-12-09 20:26:11,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:26:11,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722380751] [2020-12-09 20:26:11,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,157 INFO L87 Difference]: Start difference. First operand 294 states and 797 transitions. Second operand 5 states. [2020-12-09 20:26:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,193 INFO L93 Difference]: Finished difference Result 410 states and 1048 transitions. [2020-12-09 20:26:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 20:26:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,197 INFO L225 Difference]: With dead ends: 410 [2020-12-09 20:26:11,197 INFO L226 Difference]: Without dead ends: 344 [2020-12-09 20:26:11,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-09 20:26:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 278. [2020-12-09 20:26:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 20:26:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-12-09 20:26:11,209 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 11 [2020-12-09 20:26:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,209 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-12-09 20:26:11,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-12-09 20:26:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:26:11,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 20:26:11,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2020-12-09 20:26:11,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741637590] [2020-12-09 20:26:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741637590] [2020-12-09 20:26:11,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:26:11,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941023360] [2020-12-09 20:26:11,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,269 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 5 states. [2020-12-09 20:26:11,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,315 INFO L93 Difference]: Finished difference Result 372 states and 946 transitions. [2020-12-09 20:26:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 20:26:11,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,318 INFO L225 Difference]: With dead ends: 372 [2020-12-09 20:26:11,318 INFO L226 Difference]: Without dead ends: 318 [2020-12-09 20:26:11,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-09 20:26:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 250. [2020-12-09 20:26:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-09 20:26:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 657 transitions. [2020-12-09 20:26:11,329 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 657 transitions. Word has length 11 [2020-12-09 20:26:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,329 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 657 transitions. [2020-12-09 20:26:11,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 657 transitions. [2020-12-09 20:26:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:26:11,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:26:11,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,332 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2020-12-09 20:26:11,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249712912] [2020-12-09 20:26:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249712912] [2020-12-09 20:26:11,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:26:11,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896348190] [2020-12-09 20:26:11,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,386 INFO L87 Difference]: Start difference. First operand 250 states and 657 transitions. Second operand 5 states. [2020-12-09 20:26:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,426 INFO L93 Difference]: Finished difference Result 335 states and 834 transitions. [2020-12-09 20:26:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 20:26:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,428 INFO L225 Difference]: With dead ends: 335 [2020-12-09 20:26:11,429 INFO L226 Difference]: Without dead ends: 292 [2020-12-09 20:26:11,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-09 20:26:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-12-09 20:26:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-09 20:26:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 616 transitions. [2020-12-09 20:26:11,443 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 616 transitions. Word has length 12 [2020-12-09 20:26:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,443 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 616 transitions. [2020-12-09 20:26:11,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 616 transitions. [2020-12-09 20:26:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:26:11,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 20:26:11,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash 796278870, now seen corresponding path program 1 times [2020-12-09 20:26:11,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577811806] [2020-12-09 20:26:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577811806] [2020-12-09 20:26:11,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:26:11,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448956776] [2020-12-09 20:26:11,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,497 INFO L87 Difference]: Start difference. First operand 238 states and 616 transitions. Second operand 5 states. [2020-12-09 20:26:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,539 INFO L93 Difference]: Finished difference Result 392 states and 969 transitions. [2020-12-09 20:26:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 20:26:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,541 INFO L225 Difference]: With dead ends: 392 [2020-12-09 20:26:11,541 INFO L226 Difference]: Without dead ends: 304 [2020-12-09 20:26:11,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-09 20:26:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 222. [2020-12-09 20:26:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-09 20:26:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 550 transitions. [2020-12-09 20:26:11,548 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 550 transitions. Word has length 13 [2020-12-09 20:26:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,548 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 550 transitions. [2020-12-09 20:26:11,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 550 transitions. [2020-12-09 20:26:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:26:11,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 20:26:11,549 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash 78666770, now seen corresponding path program 1 times [2020-12-09 20:26:11,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923205894] [2020-12-09 20:26:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923205894] [2020-12-09 20:26:11,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:26:11,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226336714] [2020-12-09 20:26:11,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:26:11,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:26:11,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:26:11,592 INFO L87 Difference]: Start difference. First operand 222 states and 550 transitions. Second operand 6 states. [2020-12-09 20:26:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,622 INFO L93 Difference]: Finished difference Result 316 states and 747 transitions. [2020-12-09 20:26:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:26:11,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 20:26:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,624 INFO L225 Difference]: With dead ends: 316 [2020-12-09 20:26:11,624 INFO L226 Difference]: Without dead ends: 172 [2020-12-09 20:26:11,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 20:26:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-09 20:26:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2020-12-09 20:26:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 20:26:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2020-12-09 20:26:11,630 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 13 [2020-12-09 20:26:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,630 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2020-12-09 20:26:11,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:26:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2020-12-09 20:26:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:26:11,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:26:11,632 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 2 times [2020-12-09 20:26:11,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233488018] [2020-12-09 20:26:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233488018] [2020-12-09 20:26:11,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:26:11,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830146936] [2020-12-09 20:26:11,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:26:11,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:26:11,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:26:11,678 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand 6 states. [2020-12-09 20:26:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,703 INFO L93 Difference]: Finished difference Result 192 states and 432 transitions. [2020-12-09 20:26:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:26:11,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 20:26:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,704 INFO L225 Difference]: With dead ends: 192 [2020-12-09 20:26:11,704 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 20:26:11,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 20:26:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 20:26:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-12-09 20:26:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-09 20:26:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 204 transitions. [2020-12-09 20:26:11,707 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 204 transitions. Word has length 13 [2020-12-09 20:26:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,707 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 204 transitions. [2020-12-09 20:26:11,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:26:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 204 transitions. [2020-12-09 20:26:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:26:11,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 20:26:11,708 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,708 INFO L82 PathProgramCache]: Analyzing trace with hash 383190448, now seen corresponding path program 1 times [2020-12-09 20:26:11,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705931876] [2020-12-09 20:26:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705931876] [2020-12-09 20:26:11,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:26:11,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117445] [2020-12-09 20:26:11,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,744 INFO L87 Difference]: Start difference. First operand 92 states and 204 transitions. Second operand 5 states. [2020-12-09 20:26:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,772 INFO L93 Difference]: Finished difference Result 106 states and 217 transitions. [2020-12-09 20:26:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:26:11,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 20:26:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,773 INFO L225 Difference]: With dead ends: 106 [2020-12-09 20:26:11,773 INFO L226 Difference]: Without dead ends: 80 [2020-12-09 20:26:11,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-09 20:26:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-09 20:26:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 20:26:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 162 transitions. [2020-12-09 20:26:11,775 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 162 transitions. Word has length 13 [2020-12-09 20:26:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,775 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 162 transitions. [2020-12-09 20:26:11,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 162 transitions. [2020-12-09 20:26:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 20:26:11,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 20:26:11,776 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2020-12-09 20:26:11,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100699904] [2020-12-09 20:26:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100699904] [2020-12-09 20:26:11,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:26:11,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623343172] [2020-12-09 20:26:11,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:26:11,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:26:11,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:26:11,800 INFO L87 Difference]: Start difference. First operand 76 states and 162 transitions. Second operand 4 states. [2020-12-09 20:26:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,815 INFO L93 Difference]: Finished difference Result 80 states and 155 transitions. [2020-12-09 20:26:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:26:11,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 20:26:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,816 INFO L225 Difference]: With dead ends: 80 [2020-12-09 20:26:11,816 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 20:26:11,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 20:26:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-09 20:26:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 20:26:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 117 transitions. [2020-12-09 20:26:11,818 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 117 transitions. Word has length 14 [2020-12-09 20:26:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,818 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 117 transitions. [2020-12-09 20:26:11,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:26:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 117 transitions. [2020-12-09 20:26:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:26:11,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 20:26:11,819 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,819 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2020-12-09 20:26:11,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878361841] [2020-12-09 20:26:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878361841] [2020-12-09 20:26:11,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:26:11,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394810330] [2020-12-09 20:26:11,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:26:11,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:26:11,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:26:11,846 INFO L87 Difference]: Start difference. First operand 62 states and 117 transitions. Second operand 5 states. [2020-12-09 20:26:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,866 INFO L93 Difference]: Finished difference Result 52 states and 90 transitions. [2020-12-09 20:26:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:26:11,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:26:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,867 INFO L225 Difference]: With dead ends: 52 [2020-12-09 20:26:11,867 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 20:26:11,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:26:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 20:26:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-09 20:26:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 20:26:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-12-09 20:26:11,869 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 15 [2020-12-09 20:26:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,869 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-12-09 20:26:11,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:26:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-12-09 20:26:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 20:26:11,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:26:11,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:26:11,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 20:26:11,870 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:26:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:26:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2020-12-09 20:26:11,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:26:11,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260036610] [2020-12-09 20:26:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:26:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:26:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:26:11,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260036610] [2020-12-09 20:26:11,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:26:11,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:26:11,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360108837] [2020-12-09 20:26:11,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:26:11,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:26:11,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:26:11,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:26:11,900 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-12-09 20:26:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:26:11,914 INFO L93 Difference]: Finished difference Result 36 states and 61 transitions. [2020-12-09 20:26:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:26:11,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 20:26:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:26:11,914 INFO L225 Difference]: With dead ends: 36 [2020-12-09 20:26:11,914 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:26:11,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:26:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:26:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:26:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:26:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:26:11,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 20:26:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:26:11,915 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:26:11,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:26:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:26:11,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:26:11,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 20:26:11,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:26:11 BasicIcfg [2020-12-09 20:26:11,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:26:11,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:26:11,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:26:11,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:26:11,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:26:08" (3/4) ... [2020-12-09 20:26:11,920 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:26:11,924 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 20:26:11,925 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 20:26:11,925 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 20:26:11,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 20:26:11,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 20:26:11,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:26:11,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:26:11,954 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_894b38b7-0bc5-4f21-bd96-6c230ecfd6a1/bin/utaipan/witness.graphml [2020-12-09 20:26:11,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:26:11,955 INFO L168 Benchmark]: Toolchain (without parser) took 4158.95 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 68.2 MB in the beginning and 31.9 MB in the end (delta: 36.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,955 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:26:11,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.09 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 61.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.96 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 59.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,956 INFO L168 Benchmark]: Boogie Preprocessor took 23.73 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 58.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,957 INFO L168 Benchmark]: RCFGBuilder took 310.87 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 50.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,957 INFO L168 Benchmark]: TraceAbstraction took 3406.52 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 49.6 MB in the beginning and 35.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,957 INFO L168 Benchmark]: Witness Printer took 36.45 ms. Allocated memory is still 111.1 MB. Free memory was 35.0 MB in the beginning and 31.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:26:11,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.09 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 61.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.96 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 59.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.73 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 58.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 310.87 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 50.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3406.52 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 49.6 MB in the beginning and 35.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Witness Printer took 36.45 ms. Allocated memory is still 111.1 MB. Free memory was 35.0 MB in the beginning and 31.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 310 SDtfs, 321 SDslu, 515 SDs, 0 SdLazy, 220 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 464 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...