./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.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_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/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 8629328e258ffe2856bf08bdfdc740db811f6a10 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:20:06,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:20:06,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:20:06,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:20:06,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:20:06,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:20:06,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:20:06,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:20:06,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:20:06,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:20:06,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:20:06,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:20:06,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:20:06,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:20:06,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:20:06,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:20:06,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:20:06,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:20:06,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:20:06,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:20:06,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:20:06,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:20:06,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:20:06,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:20:06,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:20:06,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:20:06,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:20:06,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:20:06,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:20:06,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:20:06,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:20:06,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:20:06,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:20:06,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:20:06,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:20:06,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:20:06,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:20:06,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:20:06,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:20:06,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:20:06,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:20:06,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:20:06,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:20:06,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:20:06,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:20:06,537 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:20:06,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:20:06,537 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:20:06,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:20:06,537 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:20:06,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:20:06,538 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:20:06,538 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:20:06,538 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:20:06,538 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:20:06,538 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:20:06,538 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:20:06,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:20:06,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:20:06,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:20:06,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:20:06,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:20:06,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:20:06,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:20:06,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:20:06,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:20:06,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:20:06,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:20:06,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:20:06,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:20:06,543 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_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8629328e258ffe2856bf08bdfdc740db811f6a10 [2020-12-09 18:20:06,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:20:06,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:20:06,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:20:06,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:20:06,750 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:20:06,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-12-09 18:20:06,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/data/e32f64d5c/b082d14fca7e4e808aa16692d27d188a/FLAGfe27ced45 [2020-12-09 18:20:07,202 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:20:07,202 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-12-09 18:20:07,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/data/e32f64d5c/b082d14fca7e4e808aa16692d27d188a/FLAGfe27ced45 [2020-12-09 18:20:07,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/data/e32f64d5c/b082d14fca7e4e808aa16692d27d188a [2020-12-09 18:20:07,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:20:07,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:20:07,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:20:07,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:20:07,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:20:07,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a104087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07, skipping insertion in model container [2020-12-09 18:20:07,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:20:07,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:20:07,399 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_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i[949,962] [2020-12-09 18:20:07,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:20:07,499 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:20:07,507 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_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i[949,962] [2020-12-09 18:20:07,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:20:07,581 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:20:07,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07 WrapperNode [2020-12-09 18:20:07,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:20:07,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:20:07,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:20:07,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:20:07,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:20:07,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:20:07,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:20:07,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:20:07,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... [2020-12-09 18:20:07,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:20:07,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:20:07,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:20:07,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:20:07,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/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 18:20:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 18:20:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 18:20:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:20:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:20:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 18:20:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 18:20:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 18:20:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 18:20:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 18:20:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 18:20:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:20:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 18:20:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:20:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:20:07,719 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 18:20:07,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:20:07,937 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 18:20:07,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:07 BoogieIcfgContainer [2020-12-09 18:20:07,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:20:07,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:20:07,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:20:07,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:20:07,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:20:07" (1/3) ... [2020-12-09 18:20:07,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f9c819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:07, skipping insertion in model container [2020-12-09 18:20:07,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:07" (2/3) ... [2020-12-09 18:20:07,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f9c819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:07, skipping insertion in model container [2020-12-09 18:20:07,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:07" (3/3) ... [2020-12-09 18:20:07,944 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-12-09 18:20:07,953 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 18:20:07,953 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:20:07,955 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:20:07,956 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 18:20:07,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,982 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,982 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,999 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,999 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:07,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:20:08,001 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 18:20:08,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 18:20:08,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:20:08,035 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:20:08,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:20:08,035 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:20:08,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:20:08,036 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:20:08,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:20:08,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:20:08,047 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 18:20:08,049 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 18:20:08,052 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 18:20:08,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 18:20:08,094 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 18:20:08,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 18:20:08,098 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 18:20:08,101 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 18:20:10,080 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 18:20:10,266 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 18:20:10,349 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-09 18:20:10,349 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-09 18:20:10,353 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-09 18:20:10,372 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-09 18:20:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-09 18:20:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:20:10,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-09 18:20:10,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215709254] [2020-12-09 18:20:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:10,531 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 18:20:10,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215709254] [2020-12-09 18:20:10,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:10,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 18:20:10,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599461218] [2020-12-09 18:20:10,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:20:10,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:20:10,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,546 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-09 18:20:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:10,578 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-09 18:20:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:20:10,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 18:20:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:10,588 INFO L225 Difference]: With dead ends: 282 [2020-12-09 18:20:10,589 INFO L226 Difference]: Without dead ends: 218 [2020-12-09 18:20:10,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-09 18:20:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-09 18:20:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 18:20:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-09 18:20:10,631 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-12-09 18:20:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:10,632 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-09 18:20:10,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:20:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-09 18:20:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:20:10,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:20:10,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash 695075092, now seen corresponding path program 1 times [2020-12-09 18:20:10,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791234475] [2020-12-09 18:20:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:10,687 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 18:20:10,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791234475] [2020-12-09 18:20:10,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:10,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:20:10,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669023959] [2020-12-09 18:20:10,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:20:10,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:20:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,690 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-12-09 18:20:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:10,707 INFO L93 Difference]: Finished difference Result 312 states and 816 transitions. [2020-12-09 18:20:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:20:10,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 18:20:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:10,711 INFO L225 Difference]: With dead ends: 312 [2020-12-09 18:20:10,711 INFO L226 Difference]: Without dead ends: 296 [2020-12-09 18:20:10,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-09 18:20:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2020-12-09 18:20:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-09 18:20:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2020-12-09 18:20:10,743 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 9 [2020-12-09 18:20:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:10,743 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2020-12-09 18:20:10,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:20:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2020-12-09 18:20:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:20:10,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:20:10,745 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 72489286, now seen corresponding path program 1 times [2020-12-09 18:20:10,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155834855] [2020-12-09 18:20:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:10,796 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 18:20:10,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155834855] [2020-12-09 18:20:10,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 18:20:10,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903880468] [2020-12-09 18:20:10,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:20:10,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:10,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:20:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,799 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand 3 states. [2020-12-09 18:20:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:10,804 INFO L93 Difference]: Finished difference Result 254 states and 677 transitions. [2020-12-09 18:20:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:20:10,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 18:20:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:10,807 INFO L225 Difference]: With dead ends: 254 [2020-12-09 18:20:10,807 INFO L226 Difference]: Without dead ends: 254 [2020-12-09 18:20:10,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-09 18:20:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2020-12-09 18:20:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-09 18:20:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2020-12-09 18:20:10,823 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 10 [2020-12-09 18:20:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:10,823 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2020-12-09 18:20:10,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:20:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2020-12-09 18:20:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:20:10,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 18:20:10,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash 72490526, now seen corresponding path program 1 times [2020-12-09 18:20:10,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320429343] [2020-12-09 18:20:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:10,869 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 18:20:10,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320429343] [2020-12-09 18:20:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:20:10,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508435895] [2020-12-09 18:20:10,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:20:10,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:20:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,871 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand 3 states. [2020-12-09 18:20:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:10,885 INFO L93 Difference]: Finished difference Result 226 states and 600 transitions. [2020-12-09 18:20:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:20:10,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 18:20:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:10,888 INFO L225 Difference]: With dead ends: 226 [2020-12-09 18:20:10,888 INFO L226 Difference]: Without dead ends: 226 [2020-12-09 18:20:10,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:20:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-09 18:20:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2020-12-09 18:20:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-09 18:20:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2020-12-09 18:20:10,898 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2020-12-09 18:20:10,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:10,898 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2020-12-09 18:20:10,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:20:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2020-12-09 18:20:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:20:10,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:20:10,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2036231076, now seen corresponding path program 1 times [2020-12-09 18:20:10,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551528451] [2020-12-09 18:20:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:10,944 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 18:20:10,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551528451] [2020-12-09 18:20:10,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:10,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:20:10,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531812441] [2020-12-09 18:20:10,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:20:10,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:20:10,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:20:10,946 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand 4 states. [2020-12-09 18:20:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:10,965 INFO L93 Difference]: Finished difference Result 282 states and 728 transitions. [2020-12-09 18:20:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:20:10,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:20:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:10,967 INFO L225 Difference]: With dead ends: 282 [2020-12-09 18:20:10,967 INFO L226 Difference]: Without dead ends: 178 [2020-12-09 18:20:10,967 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 18:20:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-09 18:20:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-09 18:20:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-09 18:20:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-12-09 18:20:10,974 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-12-09 18:20:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:10,974 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-12-09 18:20:10,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:20:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-12-09 18:20:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:20:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:10,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 18:20:10,976 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2047800276, now seen corresponding path program 2 times [2020-12-09 18:20:10,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675573320] [2020-12-09 18:20:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:11,023 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 18:20:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675573320] [2020-12-09 18:20:11,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:11,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:20:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007455510] [2020-12-09 18:20:11,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:20:11,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:20:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:20:11,024 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-12-09 18:20:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:11,042 INFO L93 Difference]: Finished difference Result 206 states and 481 transitions. [2020-12-09 18:20:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:20:11,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:20:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:11,044 INFO L225 Difference]: With dead ends: 206 [2020-12-09 18:20:11,044 INFO L226 Difference]: Without dead ends: 150 [2020-12-09 18:20:11,045 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 18:20:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-09 18:20:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-09 18:20:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-09 18:20:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 344 transitions. [2020-12-09 18:20:11,051 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 344 transitions. Word has length 11 [2020-12-09 18:20:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:11,051 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 344 transitions. [2020-12-09 18:20:11,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:20:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 344 transitions. [2020-12-09 18:20:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:20:11,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:11,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:11,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:20:11,052 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:11,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1362454825, now seen corresponding path program 1 times [2020-12-09 18:20:11,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:11,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9556495] [2020-12-09 18:20:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:11,094 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 18:20:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9556495] [2020-12-09 18:20:11,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:11,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:20:11,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243736475] [2020-12-09 18:20:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:20:11,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:11,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:20:11,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:20:11,095 INFO L87 Difference]: Start difference. First operand 150 states and 344 transitions. Second operand 5 states. [2020-12-09 18:20:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:11,120 INFO L93 Difference]: Finished difference Result 149 states and 319 transitions. [2020-12-09 18:20:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:20:11,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 18:20:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:11,121 INFO L225 Difference]: With dead ends: 149 [2020-12-09 18:20:11,121 INFO L226 Difference]: Without dead ends: 115 [2020-12-09 18:20:11,121 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 18:20:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-09 18:20:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-09 18:20:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 18:20:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 242 transitions. [2020-12-09 18:20:11,124 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 242 transitions. Word has length 12 [2020-12-09 18:20:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:11,124 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 242 transitions. [2020-12-09 18:20:11,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:20:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 242 transitions. [2020-12-09 18:20:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:20:11,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:11,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:11,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:20:11,125 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash -646579048, now seen corresponding path program 1 times [2020-12-09 18:20:11,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:11,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617729348] [2020-12-09 18:20:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:11,161 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 18:20:11,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617729348] [2020-12-09 18:20:11,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:11,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:20:11,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278402304] [2020-12-09 18:20:11,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:20:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:20:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:20:11,163 INFO L87 Difference]: Start difference. First operand 115 states and 242 transitions. Second operand 6 states. [2020-12-09 18:20:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:11,197 INFO L93 Difference]: Finished difference Result 110 states and 230 transitions. [2020-12-09 18:20:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:20:11,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 18:20:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:11,198 INFO L225 Difference]: With dead ends: 110 [2020-12-09 18:20:11,198 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 18:20:11,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 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 18:20:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 18:20:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-09 18:20:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-09 18:20:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2020-12-09 18:20:11,202 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 14 [2020-12-09 18:20:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:11,202 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2020-12-09 18:20:11,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:20:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2020-12-09 18:20:11,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:20:11,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:11,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:11,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 18:20:11,203 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash 390859497, now seen corresponding path program 1 times [2020-12-09 18:20:11,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:11,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628222204] [2020-12-09 18:20:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:11,246 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 18:20:11,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628222204] [2020-12-09 18:20:11,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:11,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:20:11,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197166270] [2020-12-09 18:20:11,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:20:11,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:20:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:20:11,248 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand 4 states. [2020-12-09 18:20:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:11,260 INFO L93 Difference]: Finished difference Result 103 states and 209 transitions. [2020-12-09 18:20:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:20:11,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 18:20:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:11,261 INFO L225 Difference]: With dead ends: 103 [2020-12-09 18:20:11,261 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 18:20:11,261 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 18:20:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 18:20:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 18:20:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 18:20:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2020-12-09 18:20:11,263 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2020-12-09 18:20:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:11,263 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2020-12-09 18:20:11,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:20:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2020-12-09 18:20:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:20:11,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:20:11,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:20:11,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 18:20:11,264 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:20:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:20:11,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1988858199, now seen corresponding path program 2 times [2020-12-09 18:20:11,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:20:11,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994621225] [2020-12-09 18:20:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:20:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:20:11,297 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 18:20:11,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994621225] [2020-12-09 18:20:11,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:20:11,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:20:11,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412561500] [2020-12-09 18:20:11,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:20:11,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:20:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:20:11,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:20:11,299 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2020-12-09 18:20:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:20:11,309 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-12-09 18:20:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:20:11,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 18:20:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:20:11,310 INFO L225 Difference]: With dead ends: 28 [2020-12-09 18:20:11,310 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:20:11,310 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 18:20:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:20:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:20:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:20:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:20:11,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 18:20:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:20:11,311 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:20:11,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:20:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:20:11,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:20:11,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 18:20:11,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:20:11 BasicIcfg [2020-12-09 18:20:11,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:20:11,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:20:11,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:20:11,313 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:20:11,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:07" (3/4) ... [2020-12-09 18:20:11,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:20:11,320 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 18:20:11,320 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 18:20:11,320 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 18:20:11,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 18:20:11,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 18:20:11,324 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:20:11,324 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:20:11,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6bb66002-5aa0-4869-b6c5-3685aa4ada6a/bin/utaipan/witness.graphml [2020-12-09 18:20:11,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:20:11,350 INFO L168 Benchmark]: Toolchain (without parser) took 4120.41 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 53.0 MB in the beginning and 101.8 MB in the end (delta: -48.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,350 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:20:11,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.47 ms. Allocated memory is still 94.4 MB. Free memory was 52.8 MB in the beginning and 43.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 94.4 MB. Free memory was 43.1 MB in the beginning and 41.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,351 INFO L168 Benchmark]: Boogie Preprocessor took 28.64 ms. Allocated memory is still 94.4 MB. Free memory was 41.1 MB in the beginning and 72.5 MB in the end (delta: -31.4 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,351 INFO L168 Benchmark]: RCFGBuilder took 286.02 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 53.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,352 INFO L168 Benchmark]: TraceAbstraction took 3373.70 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 52.8 MB in the beginning and 104.9 MB in the end (delta: -52.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,352 INFO L168 Benchmark]: Witness Printer took 35.69 ms. Allocated memory is still 146.8 MB. Free memory was 104.9 MB in the beginning and 101.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:20:11,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.47 ms. Allocated memory is still 94.4 MB. Free memory was 52.8 MB in the beginning and 43.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 94.4 MB. Free memory was 43.1 MB in the beginning and 41.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.64 ms. Allocated memory is still 94.4 MB. Free memory was 41.1 MB in the beginning and 72.5 MB in the end (delta: -31.4 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 286.02 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 53.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3373.70 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 52.8 MB in the beginning and 104.9 MB in the end (delta: -52.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 35.69 ms. Allocated memory is still 146.8 MB. Free memory was 104.9 MB in the beginning and 101.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 831 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 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: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 174 SDtfs, 203 SDslu, 167 SDs, 0 SdLazy, 87 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 10 MinimizatonAttempts, 78 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3356 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...