./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_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_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/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 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:00:36,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:00:36,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:00:36,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:00:36,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:00:36,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:00:36,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:00:36,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:00:36,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:00:36,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:00:36,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:00:36,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:00:36,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:00:36,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:00:36,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:00:36,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:00:36,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:00:36,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:00:36,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:00:36,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:00:36,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:00:36,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:00:36,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:00:36,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:00:36,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:00:36,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:00:36,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:00:36,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:00:36,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:00:36,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:00:36,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:00:36,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:00:36,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:00:36,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:00:36,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:00:36,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:00:36,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:00:36,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:00:36,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:00:36,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:00:36,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:00:36,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:00:36,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:00:36,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:00:36,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:00:36,781 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:00:36,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:00:36,781 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:00:36,781 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:00:36,781 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:00:36,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:00:36,782 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:00:36,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:00:36,782 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:00:36,782 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:00:36,782 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:00:36,783 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:00:36,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:00:36,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:00:36,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:00:36,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:00:36,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:00:36,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:00:36,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:00:36,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:00:36,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:00:36,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:00:36,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:00:36,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:00:36,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:00:36,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:00:36,787 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:00:36,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:00:36,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:00:36,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:00:36,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:00:36,787 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_f6bb6a47-7ecd-49a6-8151-ef860de00afa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 [2020-12-09 12:00:36,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:00:36,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:00:36,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:00:36,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:00:36,988 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:00:36,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-09 12:00:37,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/data/d85947c70/ef18642f769b42cbbc4a6b30dfd45268/FLAG6e9fb28be [2020-12-09 12:00:37,450 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:00:37,451 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-09 12:00:37,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/data/d85947c70/ef18642f769b42cbbc4a6b30dfd45268/FLAG6e9fb28be [2020-12-09 12:00:37,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/data/d85947c70/ef18642f769b42cbbc4a6b30dfd45268 [2020-12-09 12:00:37,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:00:37,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:00:37,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:00:37,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:00:37,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:00:37,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:00:37" (1/1) ... [2020-12-09 12:00:37,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a401a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:37, skipping insertion in model container [2020-12-09 12:00:37,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:00:37" (1/1) ... [2020-12-09 12:00:37,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:00:37,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:00:37,984 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_f6bb6a47-7ecd-49a6-8151-ef860de00afa/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i[949,962] [2020-12-09 12:00:38,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:00:38,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:00:38,090 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_f6bb6a47-7ecd-49a6-8151-ef860de00afa/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i[949,962] [2020-12-09 12:00:38,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:00:38,159 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:00:38,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38 WrapperNode [2020-12-09 12:00:38,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:00:38,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:00:38,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:00:38,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:00:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:00:38,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:00:38,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:00:38,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:00:38,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... [2020-12-09 12:00:38,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:00:38,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:00:38,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:00:38,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:00:38,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/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 12:00:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 12:00:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 12:00:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 12:00:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 12:00:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 12:00:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 12:00:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:00:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:00:38,276 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 12:00:38,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:00:38,487 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 12:00:38,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:38 BoogieIcfgContainer [2020-12-09 12:00:38,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:00:38,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:00:38,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:00:38,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:00:38,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:00:37" (1/3) ... [2020-12-09 12:00:38,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bb8891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:00:38, skipping insertion in model container [2020-12-09 12:00:38,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:38" (2/3) ... [2020-12-09 12:00:38,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bb8891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:00:38, skipping insertion in model container [2020-12-09 12:00:38,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:38" (3/3) ... [2020-12-09 12:00:38,494 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-12-09 12:00:38,504 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 12:00:38,504 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:00:38,506 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:00:38,507 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 12:00:38,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:00:38,540 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 12:00:38,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 12:00:38,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:00:38,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:00:38,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:00:38,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:00:38,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:00:38,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:00:38,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:00:38,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:00:38,576 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 12:00:38,577 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 12:00:38,579 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 12:00:38,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 12:00:38,609 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 12:00:38,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 12:00:38,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 12:00:38,614 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 12:00:40,435 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 12:00:40,632 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 12:00:40,690 INFO L131 LiptonReduction]: Checked pairs total: 2771 [2020-12-09 12:00:40,690 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-09 12:00:40,694 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 12:00:40,712 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 12:00:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 12:00:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 12:00:40,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:40,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:40,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash -895973629, now seen corresponding path program 1 times [2020-12-09 12:00:40,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:40,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821928799] [2020-12-09 12:00:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:40,835 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 12:00:40,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821928799] [2020-12-09 12:00:40,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:40,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:00:40,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612562424] [2020-12-09 12:00:40,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:00:40,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:00:40,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:00:40,849 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 12:00:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:40,871 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 12:00:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:00:40,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 12:00:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:40,882 INFO L225 Difference]: With dead ends: 362 [2020-12-09 12:00:40,882 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 12:00:40,883 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 12:00:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 12:00:40,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 12:00:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 12:00:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 12:00:40,929 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 12:00:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:40,930 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 12:00:40,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:00:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 12:00:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:00:40,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:40,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:40,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:00:40,932 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2005427324, now seen corresponding path program 1 times [2020-12-09 12:00:40,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:40,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133562138] [2020-12-09 12:00:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,018 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 12:00:41,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133562138] [2020-12-09 12:00:41,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:00:41,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041325295] [2020-12-09 12:00:41,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:00:41,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:00:41,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:00:41,021 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 12:00:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,053 INFO L93 Difference]: Finished difference Result 474 states and 1284 transitions. [2020-12-09 12:00:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:00:41,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 12:00:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,057 INFO L225 Difference]: With dead ends: 474 [2020-12-09 12:00:41,057 INFO L226 Difference]: Without dead ends: 354 [2020-12-09 12:00:41,057 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 12:00:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-09 12:00:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 306. [2020-12-09 12:00:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-09 12:00:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 854 transitions. [2020-12-09 12:00:41,076 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 854 transitions. Word has length 9 [2020-12-09 12:00:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,076 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 854 transitions. [2020-12-09 12:00:41,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:00:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 854 transitions. [2020-12-09 12:00:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:00:41,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:00:41,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1664929715, now seen corresponding path program 1 times [2020-12-09 12:00:41,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524184432] [2020-12-09 12:00:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,123 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 12:00:41,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524184432] [2020-12-09 12:00:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:00:41,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748326358] [2020-12-09 12:00:41,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:00:41,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:00:41,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:00:41,125 INFO L87 Difference]: Start difference. First operand 306 states and 854 transitions. Second operand 4 states. [2020-12-09 12:00:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,141 INFO L93 Difference]: Finished difference Result 330 states and 888 transitions. [2020-12-09 12:00:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:00:41,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 12:00:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,143 INFO L225 Difference]: With dead ends: 330 [2020-12-09 12:00:41,143 INFO L226 Difference]: Without dead ends: 282 [2020-12-09 12:00:41,143 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 12:00:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-09 12:00:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-09 12:00:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-09 12:00:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 772 transitions. [2020-12-09 12:00:41,154 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 772 transitions. Word has length 10 [2020-12-09 12:00:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,154 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 772 transitions. [2020-12-09 12:00:41,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:00:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 772 transitions. [2020-12-09 12:00:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:00:41,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:00:41,156 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2038728515, now seen corresponding path program 1 times [2020-12-09 12:00:41,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647108867] [2020-12-09 12:00:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,204 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 12:00:41,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647108867] [2020-12-09 12:00:41,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:00:41,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769904700] [2020-12-09 12:00:41,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:00:41,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:00:41,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:00:41,206 INFO L87 Difference]: Start difference. First operand 282 states and 772 transitions. Second operand 5 states. [2020-12-09 12:00:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,249 INFO L93 Difference]: Finished difference Result 378 states and 968 transitions. [2020-12-09 12:00:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:00:41,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 12:00:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,251 INFO L225 Difference]: With dead ends: 378 [2020-12-09 12:00:41,251 INFO L226 Difference]: Without dead ends: 306 [2020-12-09 12:00:41,252 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 12:00:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-12-09 12:00:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2020-12-09 12:00:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-09 12:00:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 698 transitions. [2020-12-09 12:00:41,259 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 698 transitions. Word has length 10 [2020-12-09 12:00:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,260 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 698 transitions. [2020-12-09 12:00:41,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:00:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 698 transitions. [2020-12-09 12:00:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:00:41,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 12:00:41,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash 73189998, now seen corresponding path program 1 times [2020-12-09 12:00:41,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994970125] [2020-12-09 12:00:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,302 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 12:00:41,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994970125] [2020-12-09 12:00:41,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:00:41,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920382479] [2020-12-09 12:00:41,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:00:41,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:00:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:00:41,303 INFO L87 Difference]: Start difference. First operand 258 states and 698 transitions. Second operand 5 states. [2020-12-09 12:00:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,336 INFO L93 Difference]: Finished difference Result 314 states and 817 transitions. [2020-12-09 12:00:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:00:41,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 12:00:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,338 INFO L225 Difference]: With dead ends: 314 [2020-12-09 12:00:41,338 INFO L226 Difference]: Without dead ends: 166 [2020-12-09 12:00:41,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 12:00:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-09 12:00:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-12-09 12:00:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-09 12:00:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 406 transitions. [2020-12-09 12:00:41,342 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 406 transitions. Word has length 11 [2020-12-09 12:00:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,343 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 406 transitions. [2020-12-09 12:00:41,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:00:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 406 transitions. [2020-12-09 12:00:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 12:00:41,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 12:00:41,344 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -803726118, now seen corresponding path program 1 times [2020-12-09 12:00:41,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716307885] [2020-12-09 12:00:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,382 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 12:00:41,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716307885] [2020-12-09 12:00:41,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:00:41,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187382813] [2020-12-09 12:00:41,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:00:41,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:00:41,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:00:41,384 INFO L87 Difference]: Start difference. First operand 166 states and 406 transitions. Second operand 4 states. [2020-12-09 12:00:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,399 INFO L93 Difference]: Finished difference Result 186 states and 415 transitions. [2020-12-09 12:00:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:00:41,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 12:00:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,401 INFO L225 Difference]: With dead ends: 186 [2020-12-09 12:00:41,401 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 12:00:41,401 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 12:00:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 12:00:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-12-09 12:00:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 12:00:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 317 transitions. [2020-12-09 12:00:41,405 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 317 transitions. Word has length 13 [2020-12-09 12:00:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,405 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 317 transitions. [2020-12-09 12:00:41,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:00:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2020-12-09 12:00:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 12:00:41,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 12:00:41,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash -485202570, now seen corresponding path program 1 times [2020-12-09 12:00:41,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521586533] [2020-12-09 12:00:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,444 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 12:00:41,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521586533] [2020-12-09 12:00:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:00:41,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303574604] [2020-12-09 12:00:41,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:00:41,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:00:41,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:00:41,446 INFO L87 Difference]: Start difference. First operand 142 states and 317 transitions. Second operand 5 states. [2020-12-09 12:00:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,473 INFO L93 Difference]: Finished difference Result 135 states and 276 transitions. [2020-12-09 12:00:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:00:41,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 12:00:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,474 INFO L225 Difference]: With dead ends: 135 [2020-12-09 12:00:41,474 INFO L226 Difference]: Without dead ends: 107 [2020-12-09 12:00:41,475 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 12:00:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-09 12:00:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-09 12:00:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-09 12:00:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 216 transitions. [2020-12-09 12:00:41,477 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 216 transitions. Word has length 14 [2020-12-09 12:00:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,477 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 216 transitions. [2020-12-09 12:00:41,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:00:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 216 transitions. [2020-12-09 12:00:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 12:00:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 12:00:41,478 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1951668266, now seen corresponding path program 1 times [2020-12-09 12:00:41,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275818193] [2020-12-09 12:00:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,520 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 12:00:41,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275818193] [2020-12-09 12:00:41,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:00:41,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753882374] [2020-12-09 12:00:41,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:00:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:00:41,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:00:41,522 INFO L87 Difference]: Start difference. First operand 107 states and 216 transitions. Second operand 5 states. [2020-12-09 12:00:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,567 INFO L93 Difference]: Finished difference Result 134 states and 262 transitions. [2020-12-09 12:00:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:00:41,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 12:00:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,568 INFO L225 Difference]: With dead ends: 134 [2020-12-09 12:00:41,568 INFO L226 Difference]: Without dead ends: 105 [2020-12-09 12:00:41,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:00:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-09 12:00:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-12-09 12:00:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 12:00:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 166 transitions. [2020-12-09 12:00:41,572 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 166 transitions. Word has length 16 [2020-12-09 12:00:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,572 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 166 transitions. [2020-12-09 12:00:41,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:00:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-12-09 12:00:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 12:00:41,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 12:00:41,573 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1052233970, now seen corresponding path program 2 times [2020-12-09 12:00:41,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873131630] [2020-12-09 12:00:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,630 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 12:00:41,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873131630] [2020-12-09 12:00:41,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:00:41,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224760622] [2020-12-09 12:00:41,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:00:41,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:00:41,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:00:41,632 INFO L87 Difference]: Start difference. First operand 86 states and 166 transitions. Second operand 6 states. [2020-12-09 12:00:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,686 INFO L93 Difference]: Finished difference Result 115 states and 214 transitions. [2020-12-09 12:00:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:00:41,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 12:00:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,687 INFO L225 Difference]: With dead ends: 115 [2020-12-09 12:00:41,687 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 12:00:41,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:00:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 12:00:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-12-09 12:00:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 12:00:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-12-09 12:00:41,690 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-12-09 12:00:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,690 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-12-09 12:00:41,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:00:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-12-09 12:00:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 12:00:41,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:00:41,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:00:41,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 12:00:41,691 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:00:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:00:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1712735852, now seen corresponding path program 1 times [2020-12-09 12:00:41,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:00:41,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891859538] [2020-12-09 12:00:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:00:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:00:41,739 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 12:00:41,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891859538] [2020-12-09 12:00:41,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:00:41,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:00:41,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110409029] [2020-12-09 12:00:41,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:00:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:00:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:00:41,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:00:41,741 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 6 states. [2020-12-09 12:00:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:00:41,769 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-12-09 12:00:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:00:41,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 12:00:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:00:41,770 INFO L225 Difference]: With dead ends: 67 [2020-12-09 12:00:41,770 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:00:41,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:00:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:00:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:00:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:00:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:00:41,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 12:00:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:00:41,771 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:00:41,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:00:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:00:41,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:00:41,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 12:00:41,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:00:41 BasicIcfg [2020-12-09 12:00:41,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:00:41,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:00:41,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:00:41,773 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:00:41,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:38" (3/4) ... [2020-12-09 12:00:41,776 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:00:41,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 12:00:41,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 12:00:41,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 12:00:41,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 12:00:41,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 12:00:41,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:00:41,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:00:41,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f6bb6a47-7ecd-49a6-8151-ef860de00afa/bin/utaipan/witness.graphml [2020-12-09 12:00:41,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:00:41,810 INFO L168 Benchmark]: Toolchain (without parser) took 3975.43 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 83.4 MB in the beginning and 96.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:00:41,811 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory is still 101.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:00:41,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.82 ms. Allocated memory is still 121.6 MB. Free memory was 83.2 MB in the beginning and 77.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:00:41,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.55 ms. Allocated memory is still 121.6 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:00:41,812 INFO L168 Benchmark]: Boogie Preprocessor took 22.54 ms. Allocated memory is still 121.6 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:00:41,812 INFO L168 Benchmark]: RCFGBuilder took 269.48 ms. Allocated memory is still 121.6 MB. Free memory was 74.0 MB in the beginning and 52.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:00:41,812 INFO L168 Benchmark]: TraceAbstraction took 3283.26 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 51.4 MB in the beginning and 98.3 MB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:00:41,813 INFO L168 Benchmark]: Witness Printer took 36.24 ms. Allocated memory is still 146.8 MB. Free memory was 98.3 MB in the beginning and 96.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:00:41,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory is still 101.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.82 ms. Allocated memory is still 121.6 MB. Free memory was 83.2 MB in the beginning and 77.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.55 ms. Allocated memory is still 121.6 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.54 ms. Allocated memory is still 121.6 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.48 ms. Allocated memory is still 121.6 MB. Free memory was 74.0 MB in the beginning and 52.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3283.26 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 51.4 MB in the beginning and 98.3 MB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 36.24 ms. Allocated memory is still 146.8 MB. Free memory was 98.3 MB in the beginning and 96.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 849 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 88 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2771 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 223 SDtfs, 294 SDslu, 343 SDs, 0 SdLazy, 114 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 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: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 5399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...