./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.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_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/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 4813f1ecdee15758ab36c7ea84ae454e7bf08642 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 10:00:12,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:00:12,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:00:12,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:00:12,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:00:12,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:00:12,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:00:12,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:00:12,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:00:12,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:00:12,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:00:12,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:00:12,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:00:12,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:00:12,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:00:12,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:00:12,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:00:12,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:00:12,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:00:12,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:00:12,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:00:12,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:00:12,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:00:12,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:00:12,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:00:12,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:00:12,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:00:12,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:00:12,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:00:12,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:00:12,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:00:12,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:00:12,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:00:12,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:00:12,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:00:12,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:00:12,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:00:12,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:00:12,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:00:12,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:00:12,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:00:12,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:00:12,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:00:12,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:00:12,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:00:12,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:00:12,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:00:12,675 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:00:12,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:00:12,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:00:12,675 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:00:12,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:00:12,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:00:12,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:00:12,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:12,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:00:12,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:00:12,678 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_708dde41-e622-40d3-aef0-d9fcc8038383/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813f1ecdee15758ab36c7ea84ae454e7bf08642 [2020-12-09 10:00:12,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:00:12,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:00:12,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:00:12,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:00:12,907 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:00:12,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-12-09 10:00:12,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/data/09745363d/09f5a277f69042b9b51aecb660a600c3/FLAGc8aed0755 [2020-12-09 10:00:13,386 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:00:13,387 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-12-09 10:00:13,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/data/09745363d/09f5a277f69042b9b51aecb660a600c3/FLAGc8aed0755 [2020-12-09 10:00:13,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/data/09745363d/09f5a277f69042b9b51aecb660a600c3 [2020-12-09 10:00:13,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:00:13,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:00:13,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:13,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:00:13,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:00:13,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63326fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13, skipping insertion in model container [2020-12-09 10:00:13,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:00:13,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:00:13,604 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 10:00:13,761 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_708dde41-e622-40d3-aef0-d9fcc8038383/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2020-12-09 10:00:13,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:13,779 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:00:13,790 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 10:00:13,807 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_708dde41-e622-40d3-aef0-d9fcc8038383/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2020-12-09 10:00:13,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:13,923 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:00:13,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13 WrapperNode [2020-12-09 10:00:13,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:13,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:13,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:00:13,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:00:13,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:13,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:00:13,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:00:13,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:00:13,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... [2020-12-09 10:00:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:00:13,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:00:13,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:00:13,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:00:13,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/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 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 10:00:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-12-09 10:00:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-12-09 10:00:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-12-09 10:00:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-12-09 10:00:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:00:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:00:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:00:14,059 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 10:00:14,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:00:14,305 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 10:00:14,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:14 BoogieIcfgContainer [2020-12-09 10:00:14,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:00:14,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:00:14,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:00:14,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:00:14,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:00:13" (1/3) ... [2020-12-09 10:00:14,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d099c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:14, skipping insertion in model container [2020-12-09 10:00:14,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:13" (2/3) ... [2020-12-09 10:00:14,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d099c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:14, skipping insertion in model container [2020-12-09 10:00:14,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:14" (3/3) ... [2020-12-09 10:00:14,312 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2020-12-09 10:00:14,321 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 10:00:14,322 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:00:14,324 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:00:14,325 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 10:00:14,354 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,355 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,356 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,357 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,358 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,359 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,360 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,361 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,362 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,363 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,364 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,365 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,366 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,367 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,368 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,383 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,383 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,383 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,384 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,384 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,384 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,385 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,386 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,387 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,397 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,400 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,402 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,402 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,402 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,402 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,404 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,405 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,405 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,409 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,409 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,410 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:14,503 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-12-09 10:00:14,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-09 10:00:14,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:00:14,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:00:14,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:00:14,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:00:14,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:00:14,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:00:14,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:00:14,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:00:14,540 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 10:00:14,542 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 255 transitions, 890 flow [2020-12-09 10:00:14,544 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 255 transitions, 890 flow [2020-12-09 10:00:14,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 255 transitions, 890 flow [2020-12-09 10:00:14,623 INFO L129 PetriNetUnfolder]: 67/316 cut-off events. [2020-12-09 10:00:14,623 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-12-09 10:00:14,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 316 events. 67/316 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 990 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 365. Up to 24 conditions per place. [2020-12-09 10:00:14,643 INFO L116 LiptonReduction]: Number of co-enabled transitions 4982 [2020-12-09 10:00:17,478 INFO L131 LiptonReduction]: Checked pairs total: 55868 [2020-12-09 10:00:17,478 INFO L133 LiptonReduction]: Total number of compositions: 87 [2020-12-09 10:00:17,482 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 176 transitions, 732 flow [2020-12-09 10:00:17,879 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4478 states. [2020-12-09 10:00:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states. [2020-12-09 10:00:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:00:17,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:17,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:17,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1918747806, now seen corresponding path program 1 times [2020-12-09 10:00:17,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:17,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949248264] [2020-12-09 10:00:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:18,062 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 10:00:18,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949248264] [2020-12-09 10:00:18,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:18,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:18,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741322701] [2020-12-09 10:00:18,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:18,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:18,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:18,082 INFO L87 Difference]: Start difference. First operand 4478 states. Second operand 5 states. [2020-12-09 10:00:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:18,303 INFO L93 Difference]: Finished difference Result 5737 states and 24083 transitions. [2020-12-09 10:00:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:18,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 10:00:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:18,388 INFO L225 Difference]: With dead ends: 5737 [2020-12-09 10:00:18,388 INFO L226 Difference]: Without dead ends: 5249 [2020-12-09 10:00:18,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2020-12-09 10:00:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 3995. [2020-12-09 10:00:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-09 10:00:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 16455 transitions. [2020-12-09 10:00:18,647 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 16455 transitions. Word has length 10 [2020-12-09 10:00:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:18,648 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 16455 transitions. [2020-12-09 10:00:18,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 16455 transitions. [2020-12-09 10:00:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:00:18,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:18,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:18,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:00:18,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash -410908784, now seen corresponding path program 2 times [2020-12-09 10:00:18,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:18,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943056154] [2020-12-09 10:00:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:18,711 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 10:00:18,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943056154] [2020-12-09 10:00:18,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:18,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:18,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059050701] [2020-12-09 10:00:18,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:18,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:18,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:18,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:18,714 INFO L87 Difference]: Start difference. First operand 3995 states and 16455 transitions. Second operand 3 states. [2020-12-09 10:00:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:18,816 INFO L93 Difference]: Finished difference Result 4483 states and 17814 transitions. [2020-12-09 10:00:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:18,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 10:00:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:18,856 INFO L225 Difference]: With dead ends: 4483 [2020-12-09 10:00:18,856 INFO L226 Difference]: Without dead ends: 3995 [2020-12-09 10:00:18,857 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 10:00:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2020-12-09 10:00:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3995. [2020-12-09 10:00:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-09 10:00:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 15967 transitions. [2020-12-09 10:00:18,967 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 15967 transitions. Word has length 10 [2020-12-09 10:00:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:18,967 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 15967 transitions. [2020-12-09 10:00:18,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 15967 transitions. [2020-12-09 10:00:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:00:18,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:18,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:18,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:00:18,968 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 146714135, now seen corresponding path program 1 times [2020-12-09 10:00:18,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:18,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562461042] [2020-12-09 10:00:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:19,030 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 10:00:19,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562461042] [2020-12-09 10:00:19,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:19,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:19,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312316447] [2020-12-09 10:00:19,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:19,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:19,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:19,032 INFO L87 Difference]: Start difference. First operand 3995 states and 15967 transitions. Second operand 6 states. [2020-12-09 10:00:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:19,275 INFO L93 Difference]: Finished difference Result 6505 states and 27533 transitions. [2020-12-09 10:00:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:19,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 10:00:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:19,314 INFO L225 Difference]: With dead ends: 6505 [2020-12-09 10:00:19,314 INFO L226 Difference]: Without dead ends: 6505 [2020-12-09 10:00:19,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2020-12-09 10:00:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 3994. [2020-12-09 10:00:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2020-12-09 10:00:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 15966 transitions. [2020-12-09 10:00:19,459 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 15966 transitions. Word has length 11 [2020-12-09 10:00:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:19,459 INFO L481 AbstractCegarLoop]: Abstraction has 3994 states and 15966 transitions. [2020-12-09 10:00:19,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 15966 transitions. [2020-12-09 10:00:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:00:19,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:19,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:19,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:00:19,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1573475595, now seen corresponding path program 2 times [2020-12-09 10:00:19,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:19,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638723257] [2020-12-09 10:00:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:19,520 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 10:00:19,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638723257] [2020-12-09 10:00:19,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:19,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:19,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297790174] [2020-12-09 10:00:19,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:19,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:19,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:19,522 INFO L87 Difference]: Start difference. First operand 3994 states and 15966 transitions. Second operand 6 states. [2020-12-09 10:00:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:19,673 INFO L93 Difference]: Finished difference Result 5238 states and 21730 transitions. [2020-12-09 10:00:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:19,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 10:00:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:19,690 INFO L225 Difference]: With dead ends: 5238 [2020-12-09 10:00:19,690 INFO L226 Difference]: Without dead ends: 5238 [2020-12-09 10:00:19,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 10:00:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2020-12-09 10:00:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3980. [2020-12-09 10:00:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3980 states. [2020-12-09 10:00:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 15943 transitions. [2020-12-09 10:00:19,829 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 15943 transitions. Word has length 11 [2020-12-09 10:00:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:19,830 INFO L481 AbstractCegarLoop]: Abstraction has 3980 states and 15943 transitions. [2020-12-09 10:00:19,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 15943 transitions. [2020-12-09 10:00:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 10:00:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:19,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:19,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:00:19,832 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1473362807, now seen corresponding path program 1 times [2020-12-09 10:00:19,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:19,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985392850] [2020-12-09 10:00:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:19,874 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 10:00:19,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985392850] [2020-12-09 10:00:19,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:19,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:19,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26735134] [2020-12-09 10:00:19,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:19,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:19,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:19,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:19,876 INFO L87 Difference]: Start difference. First operand 3980 states and 15943 transitions. Second operand 5 states. [2020-12-09 10:00:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:20,019 INFO L93 Difference]: Finished difference Result 5159 states and 21026 transitions. [2020-12-09 10:00:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:20,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 10:00:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:20,033 INFO L225 Difference]: With dead ends: 5159 [2020-12-09 10:00:20,033 INFO L226 Difference]: Without dead ends: 5159 [2020-12-09 10:00:20,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2020-12-09 10:00:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 4561. [2020-12-09 10:00:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2020-12-09 10:00:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 18704 transitions. [2020-12-09 10:00:20,161 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 18704 transitions. Word has length 18 [2020-12-09 10:00:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:20,161 INFO L481 AbstractCegarLoop]: Abstraction has 4561 states and 18704 transitions. [2020-12-09 10:00:20,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 18704 transitions. [2020-12-09 10:00:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 10:00:20,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:20,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:20,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:00:20,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash -540147017, now seen corresponding path program 2 times [2020-12-09 10:00:20,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:20,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831845487] [2020-12-09 10:00:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:20,188 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 10:00:20,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831845487] [2020-12-09 10:00:20,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:20,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:20,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942947208] [2020-12-09 10:00:20,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:20,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:20,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:20,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:20,189 INFO L87 Difference]: Start difference. First operand 4561 states and 18704 transitions. Second operand 3 states. [2020-12-09 10:00:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:20,278 INFO L93 Difference]: Finished difference Result 7157 states and 28806 transitions. [2020-12-09 10:00:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:20,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 10:00:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:20,302 INFO L225 Difference]: With dead ends: 7157 [2020-12-09 10:00:20,302 INFO L226 Difference]: Without dead ends: 5563 [2020-12-09 10:00:20,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 10:00:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2020-12-09 10:00:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 4481. [2020-12-09 10:00:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-12-09 10:00:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 17410 transitions. [2020-12-09 10:00:20,454 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 17410 transitions. Word has length 18 [2020-12-09 10:00:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:20,454 INFO L481 AbstractCegarLoop]: Abstraction has 4481 states and 17410 transitions. [2020-12-09 10:00:20,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 17410 transitions. [2020-12-09 10:00:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 10:00:20,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:20,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:20,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:00:20,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:20,458 INFO L82 PathProgramCache]: Analyzing trace with hash 434667714, now seen corresponding path program 1 times [2020-12-09 10:00:20,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:20,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809837130] [2020-12-09 10:00:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:20,512 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 10:00:20,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809837130] [2020-12-09 10:00:20,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:20,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:20,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79571098] [2020-12-09 10:00:20,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:20,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:20,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:20,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:20,513 INFO L87 Difference]: Start difference. First operand 4481 states and 17410 transitions. Second operand 6 states. [2020-12-09 10:00:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:20,691 INFO L93 Difference]: Finished difference Result 5717 states and 22451 transitions. [2020-12-09 10:00:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:20,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 10:00:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:20,708 INFO L225 Difference]: With dead ends: 5717 [2020-12-09 10:00:20,709 INFO L226 Difference]: Without dead ends: 5693 [2020-12-09 10:00:20,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-12-09 10:00:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 4474. [2020-12-09 10:00:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4474 states. [2020-12-09 10:00:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 17401 transitions. [2020-12-09 10:00:20,839 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 17401 transitions. Word has length 19 [2020-12-09 10:00:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:20,839 INFO L481 AbstractCegarLoop]: Abstraction has 4474 states and 17401 transitions. [2020-12-09 10:00:20,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 17401 transitions. [2020-12-09 10:00:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 10:00:20,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:20,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:20,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:00:20,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash 780836658, now seen corresponding path program 2 times [2020-12-09 10:00:20,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:20,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743116724] [2020-12-09 10:00:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:20,883 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 10:00:20,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743116724] [2020-12-09 10:00:20,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:20,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:00:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584538773] [2020-12-09 10:00:20,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:20,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:20,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:20,884 INFO L87 Difference]: Start difference. First operand 4474 states and 17401 transitions. Second operand 6 states. [2020-12-09 10:00:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:20,958 INFO L93 Difference]: Finished difference Result 5418 states and 20587 transitions. [2020-12-09 10:00:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:20,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 10:00:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:20,967 INFO L225 Difference]: With dead ends: 5418 [2020-12-09 10:00:20,967 INFO L226 Difference]: Without dead ends: 5418 [2020-12-09 10:00:20,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2020-12-09 10:00:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4453. [2020-12-09 10:00:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-12-09 10:00:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 17345 transitions. [2020-12-09 10:00:21,048 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 17345 transitions. Word has length 19 [2020-12-09 10:00:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:21,048 INFO L481 AbstractCegarLoop]: Abstraction has 4453 states and 17345 transitions. [2020-12-09 10:00:21,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 17345 transitions. [2020-12-09 10:00:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 10:00:21,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:21,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:21,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:00:21,049 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -51062012, now seen corresponding path program 1 times [2020-12-09 10:00:21,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:21,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265032919] [2020-12-09 10:00:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:21,115 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 10:00:21,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265032919] [2020-12-09 10:00:21,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:21,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:21,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741069095] [2020-12-09 10:00:21,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:21,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:21,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:21,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:21,116 INFO L87 Difference]: Start difference. First operand 4453 states and 17345 transitions. Second operand 5 states. [2020-12-09 10:00:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:21,209 INFO L93 Difference]: Finished difference Result 5519 states and 21448 transitions. [2020-12-09 10:00:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:21,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-09 10:00:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:21,219 INFO L225 Difference]: With dead ends: 5519 [2020-12-09 10:00:21,219 INFO L226 Difference]: Without dead ends: 5423 [2020-12-09 10:00:21,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2020-12-09 10:00:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4983. [2020-12-09 10:00:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4983 states. [2020-12-09 10:00:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 19584 transitions. [2020-12-09 10:00:21,303 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 19584 transitions. Word has length 20 [2020-12-09 10:00:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:21,303 INFO L481 AbstractCegarLoop]: Abstraction has 4983 states and 19584 transitions. [2020-12-09 10:00:21,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 19584 transitions. [2020-12-09 10:00:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 10:00:21,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:21,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:21,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 10:00:21,305 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:21,305 INFO L82 PathProgramCache]: Analyzing trace with hash -878852686, now seen corresponding path program 2 times [2020-12-09 10:00:21,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:21,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12029494] [2020-12-09 10:00:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:21,329 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 10:00:21,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12029494] [2020-12-09 10:00:21,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:21,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:21,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919558701] [2020-12-09 10:00:21,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:21,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:21,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:21,330 INFO L87 Difference]: Start difference. First operand 4983 states and 19584 transitions. Second operand 4 states. [2020-12-09 10:00:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:21,440 INFO L93 Difference]: Finished difference Result 6724 states and 25076 transitions. [2020-12-09 10:00:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:21,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 10:00:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:21,452 INFO L225 Difference]: With dead ends: 6724 [2020-12-09 10:00:21,452 INFO L226 Difference]: Without dead ends: 5604 [2020-12-09 10:00:21,453 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 10:00:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2020-12-09 10:00:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5230. [2020-12-09 10:00:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5230 states. [2020-12-09 10:00:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 19603 transitions. [2020-12-09 10:00:21,568 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 19603 transitions. Word has length 20 [2020-12-09 10:00:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:21,569 INFO L481 AbstractCegarLoop]: Abstraction has 5230 states and 19603 transitions. [2020-12-09 10:00:21,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 19603 transitions. [2020-12-09 10:00:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:00:21,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:21,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:21,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 10:00:21,573 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:21,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1476107581, now seen corresponding path program 1 times [2020-12-09 10:00:21,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:21,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480027621] [2020-12-09 10:00:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:21,621 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 10:00:21,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480027621] [2020-12-09 10:00:21,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:21,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:21,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024692782] [2020-12-09 10:00:21,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:21,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:21,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:21,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:21,623 INFO L87 Difference]: Start difference. First operand 5230 states and 19603 transitions. Second operand 6 states. [2020-12-09 10:00:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:21,785 INFO L93 Difference]: Finished difference Result 5940 states and 21833 transitions. [2020-12-09 10:00:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:21,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 10:00:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:21,796 INFO L225 Difference]: With dead ends: 5940 [2020-12-09 10:00:21,796 INFO L226 Difference]: Without dead ends: 5718 [2020-12-09 10:00:21,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2020-12-09 10:00:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4887. [2020-12-09 10:00:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4887 states. [2020-12-09 10:00:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 18065 transitions. [2020-12-09 10:00:21,912 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 18065 transitions. Word has length 21 [2020-12-09 10:00:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:21,912 INFO L481 AbstractCegarLoop]: Abstraction has 4887 states and 18065 transitions. [2020-12-09 10:00:21,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 18065 transitions. [2020-12-09 10:00:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:00:21,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:21,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:21,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 10:00:21,916 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -658120403, now seen corresponding path program 1 times [2020-12-09 10:00:21,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:21,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848405578] [2020-12-09 10:00:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:21,959 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 10:00:21,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848405578] [2020-12-09 10:00:21,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:21,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:00:21,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450258607] [2020-12-09 10:00:21,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:21,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:21,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:21,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:21,960 INFO L87 Difference]: Start difference. First operand 4887 states and 18065 transitions. Second operand 6 states. [2020-12-09 10:00:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:22,062 INFO L93 Difference]: Finished difference Result 5654 states and 20566 transitions. [2020-12-09 10:00:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:22,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 10:00:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:22,074 INFO L225 Difference]: With dead ends: 5654 [2020-12-09 10:00:22,074 INFO L226 Difference]: Without dead ends: 5654 [2020-12-09 10:00:22,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2020-12-09 10:00:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4899. [2020-12-09 10:00:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4899 states. [2020-12-09 10:00:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 18097 transitions. [2020-12-09 10:00:22,182 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 18097 transitions. Word has length 21 [2020-12-09 10:00:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:22,182 INFO L481 AbstractCegarLoop]: Abstraction has 4899 states and 18097 transitions. [2020-12-09 10:00:22,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 18097 transitions. [2020-12-09 10:00:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:00:22,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:22,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:22,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 10:00:22,184 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1403528625, now seen corresponding path program 2 times [2020-12-09 10:00:22,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:22,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806296644] [2020-12-09 10:00:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:22,238 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 10:00:22,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806296644] [2020-12-09 10:00:22,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:22,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:22,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163186765] [2020-12-09 10:00:22,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:00:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:00:22,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:22,239 INFO L87 Difference]: Start difference. First operand 4899 states and 18097 transitions. Second operand 7 states. [2020-12-09 10:00:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:22,327 INFO L93 Difference]: Finished difference Result 5577 states and 20321 transitions. [2020-12-09 10:00:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:22,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-09 10:00:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:22,337 INFO L225 Difference]: With dead ends: 5577 [2020-12-09 10:00:22,337 INFO L226 Difference]: Without dead ends: 5577 [2020-12-09 10:00:22,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2020-12-09 10:00:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 4839. [2020-12-09 10:00:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-12-09 10:00:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 17895 transitions. [2020-12-09 10:00:22,428 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 17895 transitions. Word has length 21 [2020-12-09 10:00:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:22,428 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 17895 transitions. [2020-12-09 10:00:22,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:00:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 17895 transitions. [2020-12-09 10:00:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:00:22,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:22,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:22,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 10:00:22,430 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash 479765811, now seen corresponding path program 2 times [2020-12-09 10:00:22,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:22,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323480114] [2020-12-09 10:00:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:22,472 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 10:00:22,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323480114] [2020-12-09 10:00:22,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:22,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:00:22,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460732256] [2020-12-09 10:00:22,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:00:22,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:22,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:00:22,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:22,473 INFO L87 Difference]: Start difference. First operand 4839 states and 17895 transitions. Second operand 7 states. [2020-12-09 10:00:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:22,586 INFO L93 Difference]: Finished difference Result 5375 states and 19365 transitions. [2020-12-09 10:00:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:22,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-09 10:00:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:22,595 INFO L225 Difference]: With dead ends: 5375 [2020-12-09 10:00:22,596 INFO L226 Difference]: Without dead ends: 5140 [2020-12-09 10:00:22,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2020-12-09 10:00:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 4770. [2020-12-09 10:00:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4770 states. [2020-12-09 10:00:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 17663 transitions. [2020-12-09 10:00:22,684 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 17663 transitions. Word has length 21 [2020-12-09 10:00:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 4770 states and 17663 transitions. [2020-12-09 10:00:22,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:00:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 17663 transitions. [2020-12-09 10:00:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:00:22,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:22,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:22,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 10:00:22,687 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:22,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2022418832, now seen corresponding path program 1 times [2020-12-09 10:00:22,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:22,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519338467] [2020-12-09 10:00:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:22,771 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 10:00:22,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519338467] [2020-12-09 10:00:22,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:22,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:22,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605535829] [2020-12-09 10:00:22,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:22,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:22,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:22,773 INFO L87 Difference]: Start difference. First operand 4770 states and 17663 transitions. Second operand 8 states. [2020-12-09 10:00:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:23,048 INFO L93 Difference]: Finished difference Result 6062 states and 22739 transitions. [2020-12-09 10:00:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:00:23,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-09 10:00:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:23,060 INFO L225 Difference]: With dead ends: 6062 [2020-12-09 10:00:23,060 INFO L226 Difference]: Without dead ends: 5902 [2020-12-09 10:00:23,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2020-12-09 10:00:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5126. [2020-12-09 10:00:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-12-09 10:00:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 19402 transitions. [2020-12-09 10:00:23,150 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 19402 transitions. Word has length 22 [2020-12-09 10:00:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:23,150 INFO L481 AbstractCegarLoop]: Abstraction has 5126 states and 19402 transitions. [2020-12-09 10:00:23,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 19402 transitions. [2020-12-09 10:00:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:00:23,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:23,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:23,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 10:00:23,153 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:23,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1501683984, now seen corresponding path program 2 times [2020-12-09 10:00:23,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:23,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309889424] [2020-12-09 10:00:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:23,220 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 10:00:23,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309889424] [2020-12-09 10:00:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404528520] [2020-12-09 10:00:23,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 10:00:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:23,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 10:00:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:23,221 INFO L87 Difference]: Start difference. First operand 5126 states and 19402 transitions. Second operand 9 states. [2020-12-09 10:00:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:23,447 INFO L93 Difference]: Finished difference Result 7825 states and 30453 transitions. [2020-12-09 10:00:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:23,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-09 10:00:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:23,460 INFO L225 Difference]: With dead ends: 7825 [2020-12-09 10:00:23,460 INFO L226 Difference]: Without dead ends: 7665 [2020-12-09 10:00:23,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2020-12-09 10:00:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 5124. [2020-12-09 10:00:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5124 states. [2020-12-09 10:00:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 19398 transitions. [2020-12-09 10:00:23,553 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 19398 transitions. Word has length 22 [2020-12-09 10:00:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:23,553 INFO L481 AbstractCegarLoop]: Abstraction has 5124 states and 19398 transitions. [2020-12-09 10:00:23,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 10:00:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 19398 transitions. [2020-12-09 10:00:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:00:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:23,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:23,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 10:00:23,556 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:23,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:23,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1670308188, now seen corresponding path program 3 times [2020-12-09 10:00:23,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:23,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105105341] [2020-12-09 10:00:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:23,630 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 10:00:23,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105105341] [2020-12-09 10:00:23,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:23,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:23,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594858971] [2020-12-09 10:00:23,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 10:00:23,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:23,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 10:00:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:23,632 INFO L87 Difference]: Start difference. First operand 5124 states and 19398 transitions. Second operand 9 states. [2020-12-09 10:00:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:23,809 INFO L93 Difference]: Finished difference Result 6406 states and 24448 transitions. [2020-12-09 10:00:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:23,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-09 10:00:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:23,821 INFO L225 Difference]: With dead ends: 6406 [2020-12-09 10:00:23,821 INFO L226 Difference]: Without dead ends: 6246 [2020-12-09 10:00:23,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2020-12-09 10:00:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5120. [2020-12-09 10:00:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-09 10:00:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 19386 transitions. [2020-12-09 10:00:23,909 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 19386 transitions. Word has length 22 [2020-12-09 10:00:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:23,909 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 19386 transitions. [2020-12-09 10:00:23,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 10:00:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 19386 transitions. [2020-12-09 10:00:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:00:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:23,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:23,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 10:00:23,912 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:23,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1267239594, now seen corresponding path program 4 times [2020-12-09 10:00:23,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:23,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808671642] [2020-12-09 10:00:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:24,057 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 10:00:24,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808671642] [2020-12-09 10:00:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63696340] [2020-12-09 10:00:24,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:24,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:24,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:24,058 INFO L87 Difference]: Start difference. First operand 5120 states and 19386 transitions. Second operand 11 states. [2020-12-09 10:00:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:24,524 INFO L93 Difference]: Finished difference Result 6594 states and 25441 transitions. [2020-12-09 10:00:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 10:00:24,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-09 10:00:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:24,535 INFO L225 Difference]: With dead ends: 6594 [2020-12-09 10:00:24,536 INFO L226 Difference]: Without dead ends: 6496 [2020-12-09 10:00:24,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-09 10:00:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2020-12-09 10:00:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 5108. [2020-12-09 10:00:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5108 states. [2020-12-09 10:00:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 19355 transitions. [2020-12-09 10:00:24,619 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 19355 transitions. Word has length 22 [2020-12-09 10:00:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:24,619 INFO L481 AbstractCegarLoop]: Abstraction has 5108 states and 19355 transitions. [2020-12-09 10:00:24,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 19355 transitions. [2020-12-09 10:00:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:24,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:24,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:24,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 10:00:24,623 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash -335513452, now seen corresponding path program 1 times [2020-12-09 10:00:24,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:24,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882743518] [2020-12-09 10:00:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:24,644 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 10:00:24,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882743518] [2020-12-09 10:00:24,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:24,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:24,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132348417] [2020-12-09 10:00:24,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:24,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:24,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:24,645 INFO L87 Difference]: Start difference. First operand 5108 states and 19355 transitions. Second operand 5 states. [2020-12-09 10:00:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:24,735 INFO L93 Difference]: Finished difference Result 5740 states and 21369 transitions. [2020-12-09 10:00:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:24,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-09 10:00:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:24,744 INFO L225 Difference]: With dead ends: 5740 [2020-12-09 10:00:24,744 INFO L226 Difference]: Without dead ends: 5538 [2020-12-09 10:00:24,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2020-12-09 10:00:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5288. [2020-12-09 10:00:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-12-09 10:00:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 19964 transitions. [2020-12-09 10:00:24,824 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 19964 transitions. Word has length 23 [2020-12-09 10:00:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:24,824 INFO L481 AbstractCegarLoop]: Abstraction has 5288 states and 19964 transitions. [2020-12-09 10:00:24,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 19964 transitions. [2020-12-09 10:00:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:24,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:24,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:24,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-09 10:00:24,828 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash 654731046, now seen corresponding path program 2 times [2020-12-09 10:00:24,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:24,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530298057] [2020-12-09 10:00:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:24,859 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 10:00:24,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530298057] [2020-12-09 10:00:24,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:24,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:24,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839255968] [2020-12-09 10:00:24,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:24,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:24,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:24,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:24,860 INFO L87 Difference]: Start difference. First operand 5288 states and 19964 transitions. Second operand 6 states. [2020-12-09 10:00:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:24,979 INFO L93 Difference]: Finished difference Result 5634 states and 20831 transitions. [2020-12-09 10:00:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:24,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-09 10:00:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:24,987 INFO L225 Difference]: With dead ends: 5634 [2020-12-09 10:00:24,987 INFO L226 Difference]: Without dead ends: 5432 [2020-12-09 10:00:24,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2020-12-09 10:00:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5044. [2020-12-09 10:00:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5044 states. [2020-12-09 10:00:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 18964 transitions. [2020-12-09 10:00:25,061 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 18964 transitions. Word has length 23 [2020-12-09 10:00:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:25,062 INFO L481 AbstractCegarLoop]: Abstraction has 5044 states and 18964 transitions. [2020-12-09 10:00:25,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 18964 transitions. [2020-12-09 10:00:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:25,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:25,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:25,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-09 10:00:25,065 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:25,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:25,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1393943423, now seen corresponding path program 1 times [2020-12-09 10:00:25,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:25,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305286440] [2020-12-09 10:00:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:25,097 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 10:00:25,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305286440] [2020-12-09 10:00:25,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:25,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:00:25,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55160264] [2020-12-09 10:00:25,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:25,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:25,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:25,098 INFO L87 Difference]: Start difference. First operand 5044 states and 18964 transitions. Second operand 6 states. [2020-12-09 10:00:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:25,164 INFO L93 Difference]: Finished difference Result 5955 states and 22016 transitions. [2020-12-09 10:00:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:25,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-09 10:00:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:25,173 INFO L225 Difference]: With dead ends: 5955 [2020-12-09 10:00:25,173 INFO L226 Difference]: Without dead ends: 5444 [2020-12-09 10:00:25,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2020-12-09 10:00:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 4599. [2020-12-09 10:00:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-12-09 10:00:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 17009 transitions. [2020-12-09 10:00:25,243 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 17009 transitions. Word has length 23 [2020-12-09 10:00:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:25,243 INFO L481 AbstractCegarLoop]: Abstraction has 4599 states and 17009 transitions. [2020-12-09 10:00:25,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 17009 transitions. [2020-12-09 10:00:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:25,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:25,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:25,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 10:00:25,246 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1259322281, now seen corresponding path program 2 times [2020-12-09 10:00:25,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:25,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365904764] [2020-12-09 10:00:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:25,298 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 10:00:25,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365904764] [2020-12-09 10:00:25,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:25,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439277621] [2020-12-09 10:00:25,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:00:25,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:00:25,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:25,299 INFO L87 Difference]: Start difference. First operand 4599 states and 17009 transitions. Second operand 7 states. [2020-12-09 10:00:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:25,397 INFO L93 Difference]: Finished difference Result 5350 states and 19634 transitions. [2020-12-09 10:00:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:25,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-09 10:00:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:25,405 INFO L225 Difference]: With dead ends: 5350 [2020-12-09 10:00:25,405 INFO L226 Difference]: Without dead ends: 5181 [2020-12-09 10:00:25,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2020-12-09 10:00:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 4587. [2020-12-09 10:00:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4587 states. [2020-12-09 10:00:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 16982 transitions. [2020-12-09 10:00:25,477 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 16982 transitions. Word has length 23 [2020-12-09 10:00:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:25,477 INFO L481 AbstractCegarLoop]: Abstraction has 4587 states and 16982 transitions. [2020-12-09 10:00:25,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:00:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 16982 transitions. [2020-12-09 10:00:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:25,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:25,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:25,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 10:00:25,480 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:25,480 INFO L82 PathProgramCache]: Analyzing trace with hash -337085191, now seen corresponding path program 3 times [2020-12-09 10:00:25,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:25,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813983134] [2020-12-09 10:00:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:25,539 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 10:00:25,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813983134] [2020-12-09 10:00:25,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:25,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:25,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392563284] [2020-12-09 10:00:25,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:25,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:25,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:25,541 INFO L87 Difference]: Start difference. First operand 4587 states and 16982 transitions. Second operand 8 states. [2020-12-09 10:00:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:25,738 INFO L93 Difference]: Finished difference Result 6441 states and 23994 transitions. [2020-12-09 10:00:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:25,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-09 10:00:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:25,750 INFO L225 Difference]: With dead ends: 6441 [2020-12-09 10:00:25,750 INFO L226 Difference]: Without dead ends: 6333 [2020-12-09 10:00:25,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2020-12-09 10:00:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 4776. [2020-12-09 10:00:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4776 states. [2020-12-09 10:00:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 17749 transitions. [2020-12-09 10:00:25,913 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 17749 transitions. Word has length 23 [2020-12-09 10:00:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:25,913 INFO L481 AbstractCegarLoop]: Abstraction has 4776 states and 17749 transitions. [2020-12-09 10:00:25,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 17749 transitions. [2020-12-09 10:00:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:25,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:25,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:25,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 10:00:25,919 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:25,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1845797673, now seen corresponding path program 4 times [2020-12-09 10:00:25,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:25,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931826577] [2020-12-09 10:00:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:25,992 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 10:00:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931826577] [2020-12-09 10:00:25,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:25,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:25,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045167790] [2020-12-09 10:00:25,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:25,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:25,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:25,993 INFO L87 Difference]: Start difference. First operand 4776 states and 17749 transitions. Second operand 8 states. [2020-12-09 10:00:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:26,201 INFO L93 Difference]: Finished difference Result 5607 states and 20671 transitions. [2020-12-09 10:00:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:26,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-09 10:00:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:26,211 INFO L225 Difference]: With dead ends: 5607 [2020-12-09 10:00:26,211 INFO L226 Difference]: Without dead ends: 5499 [2020-12-09 10:00:26,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2020-12-09 10:00:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4744. [2020-12-09 10:00:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4744 states. [2020-12-09 10:00:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 17579 transitions. [2020-12-09 10:00:26,309 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 17579 transitions. Word has length 23 [2020-12-09 10:00:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:26,309 INFO L481 AbstractCegarLoop]: Abstraction has 4744 states and 17579 transitions. [2020-12-09 10:00:26,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 17579 transitions. [2020-12-09 10:00:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:26,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:26,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:26,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-09 10:00:26,313 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1362361899, now seen corresponding path program 1 times [2020-12-09 10:00:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:26,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241013986] [2020-12-09 10:00:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:26,506 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 10:00:26,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241013986] [2020-12-09 10:00:26,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:26,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:26,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309847114] [2020-12-09 10:00:26,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:26,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:26,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:26,507 INFO L87 Difference]: Start difference. First operand 4744 states and 17579 transitions. Second operand 11 states. [2020-12-09 10:00:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:26,985 INFO L93 Difference]: Finished difference Result 5846 states and 21883 transitions. [2020-12-09 10:00:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:00:26,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-12-09 10:00:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:26,997 INFO L225 Difference]: With dead ends: 5846 [2020-12-09 10:00:26,997 INFO L226 Difference]: Without dead ends: 5680 [2020-12-09 10:00:26,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-09 10:00:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2020-12-09 10:00:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 4707. [2020-12-09 10:00:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-12-09 10:00:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 17526 transitions. [2020-12-09 10:00:27,092 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 17526 transitions. Word has length 23 [2020-12-09 10:00:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:27,092 INFO L481 AbstractCegarLoop]: Abstraction has 4707 states and 17526 transitions. [2020-12-09 10:00:27,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 17526 transitions. [2020-12-09 10:00:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:27,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:27,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:27,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-09 10:00:27,096 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1508198191, now seen corresponding path program 5 times [2020-12-09 10:00:27,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:27,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90685400] [2020-12-09 10:00:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:27,191 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 10:00:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90685400] [2020-12-09 10:00:27,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:27,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:27,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391356376] [2020-12-09 10:00:27,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:27,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:27,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:27,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:27,192 INFO L87 Difference]: Start difference. First operand 4707 states and 17526 transitions. Second operand 10 states. [2020-12-09 10:00:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:27,464 INFO L93 Difference]: Finished difference Result 5834 states and 21729 transitions. [2020-12-09 10:00:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:27,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-09 10:00:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:27,475 INFO L225 Difference]: With dead ends: 5834 [2020-12-09 10:00:27,475 INFO L226 Difference]: Without dead ends: 5792 [2020-12-09 10:00:27,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-12-09 10:00:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 4835. [2020-12-09 10:00:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2020-12-09 10:00:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 18085 transitions. [2020-12-09 10:00:27,560 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 18085 transitions. Word has length 23 [2020-12-09 10:00:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:27,561 INFO L481 AbstractCegarLoop]: Abstraction has 4835 states and 18085 transitions. [2020-12-09 10:00:27,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 18085 transitions. [2020-12-09 10:00:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:27,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:27,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-09 10:00:27,564 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1172688247, now seen corresponding path program 6 times [2020-12-09 10:00:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:27,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961585339] [2020-12-09 10:00:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:27,640 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 10:00:27,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961585339] [2020-12-09 10:00:27,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:27,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840264877] [2020-12-09 10:00:27,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:27,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:27,641 INFO L87 Difference]: Start difference. First operand 4835 states and 18085 transitions. Second operand 8 states. [2020-12-09 10:00:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:27,757 INFO L93 Difference]: Finished difference Result 4832 states and 18017 transitions. [2020-12-09 10:00:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:27,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-09 10:00:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:27,765 INFO L225 Difference]: With dead ends: 4832 [2020-12-09 10:00:27,765 INFO L226 Difference]: Without dead ends: 4832 [2020-12-09 10:00:27,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-12-09 10:00:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4441. [2020-12-09 10:00:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4441 states. [2020-12-09 10:00:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 16520 transitions. [2020-12-09 10:00:27,830 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 16520 transitions. Word has length 23 [2020-12-09 10:00:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:27,830 INFO L481 AbstractCegarLoop]: Abstraction has 4441 states and 16520 transitions. [2020-12-09 10:00:27,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 16520 transitions. [2020-12-09 10:00:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:00:27,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:27,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:27,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-09 10:00:27,833 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -28113609, now seen corresponding path program 1 times [2020-12-09 10:00:27,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:27,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326218451] [2020-12-09 10:00:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:27,888 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 10:00:27,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326218451] [2020-12-09 10:00:27,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:27,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:27,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875307503] [2020-12-09 10:00:27,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:27,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:27,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:27,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:27,889 INFO L87 Difference]: Start difference. First operand 4441 states and 16520 transitions. Second operand 8 states. [2020-12-09 10:00:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:27,998 INFO L93 Difference]: Finished difference Result 4773 states and 17401 transitions. [2020-12-09 10:00:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:27,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-09 10:00:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:28,005 INFO L225 Difference]: With dead ends: 4773 [2020-12-09 10:00:28,005 INFO L226 Difference]: Without dead ends: 4444 [2020-12-09 10:00:28,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-12-09 10:00:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3748. [2020-12-09 10:00:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3748 states. [2020-12-09 10:00:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 13965 transitions. [2020-12-09 10:00:28,060 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 13965 transitions. Word has length 23 [2020-12-09 10:00:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:28,060 INFO L481 AbstractCegarLoop]: Abstraction has 3748 states and 13965 transitions. [2020-12-09 10:00:28,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 13965 transitions. [2020-12-09 10:00:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 10:00:28,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:28,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:28,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-09 10:00:28,064 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:28,064 INFO L82 PathProgramCache]: Analyzing trace with hash -2056704833, now seen corresponding path program 1 times [2020-12-09 10:00:28,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:28,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795401229] [2020-12-09 10:00:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:28,288 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 10:00:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795401229] [2020-12-09 10:00:28,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:28,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:28,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486831772] [2020-12-09 10:00:28,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:28,289 INFO L87 Difference]: Start difference. First operand 3748 states and 13965 transitions. Second operand 12 states. [2020-12-09 10:00:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:28,883 INFO L93 Difference]: Finished difference Result 4511 states and 17017 transitions. [2020-12-09 10:00:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 10:00:28,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-12-09 10:00:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:28,890 INFO L225 Difference]: With dead ends: 4511 [2020-12-09 10:00:28,890 INFO L226 Difference]: Without dead ends: 4283 [2020-12-09 10:00:28,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-12-09 10:00:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2020-12-09 10:00:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3048. [2020-12-09 10:00:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3048 states. [2020-12-09 10:00:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 11102 transitions. [2020-12-09 10:00:28,939 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 11102 transitions. Word has length 25 [2020-12-09 10:00:28,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:28,939 INFO L481 AbstractCegarLoop]: Abstraction has 3048 states and 11102 transitions. [2020-12-09 10:00:28,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 11102 transitions. [2020-12-09 10:00:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:28,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:28,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:28,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-09 10:00:28,942 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:28,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1187319537, now seen corresponding path program 1 times [2020-12-09 10:00:28,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:28,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715395034] [2020-12-09 10:00:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:29,001 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 10:00:29,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715395034] [2020-12-09 10:00:29,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:29,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:29,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570937414] [2020-12-09 10:00:29,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:29,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:29,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:29,002 INFO L87 Difference]: Start difference. First operand 3048 states and 11102 transitions. Second operand 8 states. [2020-12-09 10:00:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:29,230 INFO L93 Difference]: Finished difference Result 3362 states and 12023 transitions. [2020-12-09 10:00:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:00:29,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 10:00:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:29,235 INFO L225 Difference]: With dead ends: 3362 [2020-12-09 10:00:29,235 INFO L226 Difference]: Without dead ends: 3242 [2020-12-09 10:00:29,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-12-09 10:00:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2875. [2020-12-09 10:00:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2020-12-09 10:00:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 10403 transitions. [2020-12-09 10:00:29,281 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 10403 transitions. Word has length 26 [2020-12-09 10:00:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:29,281 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 10403 transitions. [2020-12-09 10:00:29,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 10403 transitions. [2020-12-09 10:00:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:29,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:29,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:29,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-09 10:00:29,284 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1028221071, now seen corresponding path program 2 times [2020-12-09 10:00:29,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:29,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158933329] [2020-12-09 10:00:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:29,365 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 10:00:29,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158933329] [2020-12-09 10:00:29,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:29,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:29,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282186978] [2020-12-09 10:00:29,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 10:00:29,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:29,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 10:00:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:29,366 INFO L87 Difference]: Start difference. First operand 2875 states and 10403 transitions. Second operand 9 states. [2020-12-09 10:00:29,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:29,637 INFO L93 Difference]: Finished difference Result 3797 states and 13773 transitions. [2020-12-09 10:00:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 10:00:29,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-09 10:00:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:29,643 INFO L225 Difference]: With dead ends: 3797 [2020-12-09 10:00:29,643 INFO L226 Difference]: Without dead ends: 3725 [2020-12-09 10:00:29,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2020-12-09 10:00:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3043. [2020-12-09 10:00:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-12-09 10:00:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 11114 transitions. [2020-12-09 10:00:29,687 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 11114 transitions. Word has length 26 [2020-12-09 10:00:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:29,687 INFO L481 AbstractCegarLoop]: Abstraction has 3043 states and 11114 transitions. [2020-12-09 10:00:29,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 10:00:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 11114 transitions. [2020-12-09 10:00:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:29,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:29,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:29,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-09 10:00:29,690 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash 184481335, now seen corresponding path program 1 times [2020-12-09 10:00:29,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:29,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900492453] [2020-12-09 10:00:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:29,781 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 10:00:29,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900492453] [2020-12-09 10:00:29,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:29,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:29,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623499888] [2020-12-09 10:00:29,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 10:00:29,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 10:00:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:29,782 INFO L87 Difference]: Start difference. First operand 3043 states and 11114 transitions. Second operand 9 states. [2020-12-09 10:00:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:30,039 INFO L93 Difference]: Finished difference Result 3389 states and 12128 transitions. [2020-12-09 10:00:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:30,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-09 10:00:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:30,045 INFO L225 Difference]: With dead ends: 3389 [2020-12-09 10:00:30,045 INFO L226 Difference]: Without dead ends: 3267 [2020-12-09 10:00:30,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-12-09 10:00:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2868. [2020-12-09 10:00:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2868 states. [2020-12-09 10:00:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 10386 transitions. [2020-12-09 10:00:30,088 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 10386 transitions. Word has length 26 [2020-12-09 10:00:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:30,088 INFO L481 AbstractCegarLoop]: Abstraction has 2868 states and 10386 transitions. [2020-12-09 10:00:30,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 10:00:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 10386 transitions. [2020-12-09 10:00:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:30,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:30,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:30,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-09 10:00:30,091 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2021023853, now seen corresponding path program 3 times [2020-12-09 10:00:30,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:30,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232621282] [2020-12-09 10:00:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:30,176 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 10:00:30,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232621282] [2020-12-09 10:00:30,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:30,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:30,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541539876] [2020-12-09 10:00:30,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:30,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:30,177 INFO L87 Difference]: Start difference. First operand 2868 states and 10386 transitions. Second operand 10 states. [2020-12-09 10:00:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:30,367 INFO L93 Difference]: Finished difference Result 4342 states and 16142 transitions. [2020-12-09 10:00:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:30,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 10:00:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:30,374 INFO L225 Difference]: With dead ends: 4342 [2020-12-09 10:00:30,374 INFO L226 Difference]: Without dead ends: 4270 [2020-12-09 10:00:30,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-09 10:00:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2020-12-09 10:00:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3030. [2020-12-09 10:00:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-12-09 10:00:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 11079 transitions. [2020-12-09 10:00:30,427 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 11079 transitions. Word has length 26 [2020-12-09 10:00:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:30,428 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 11079 transitions. [2020-12-09 10:00:30,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 11079 transitions. [2020-12-09 10:00:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:30,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:30,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-09 10:00:30,431 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:30,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1061241037, now seen corresponding path program 2 times [2020-12-09 10:00:30,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933876403] [2020-12-09 10:00:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:30,557 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 10:00:30,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933876403] [2020-12-09 10:00:30,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:30,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:30,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149133289] [2020-12-09 10:00:30,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:30,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:30,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:30,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:30,558 INFO L87 Difference]: Start difference. First operand 3030 states and 11079 transitions. Second operand 10 states. [2020-12-09 10:00:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:30,872 INFO L93 Difference]: Finished difference Result 3755 states and 13672 transitions. [2020-12-09 10:00:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:30,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 10:00:30,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:30,877 INFO L225 Difference]: With dead ends: 3755 [2020-12-09 10:00:30,878 INFO L226 Difference]: Without dead ends: 3634 [2020-12-09 10:00:30,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2020-12-09 10:00:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3010. [2020-12-09 10:00:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-12-09 10:00:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 11010 transitions. [2020-12-09 10:00:30,922 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 11010 transitions. Word has length 26 [2020-12-09 10:00:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:30,922 INFO L481 AbstractCegarLoop]: Abstraction has 3010 states and 11010 transitions. [2020-12-09 10:00:30,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 11010 transitions. [2020-12-09 10:00:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:30,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:30,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:30,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-09 10:00:30,925 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1632342331, now seen corresponding path program 4 times [2020-12-09 10:00:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:30,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467870014] [2020-12-09 10:00:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:30,991 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 10:00:30,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467870014] [2020-12-09 10:00:30,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:30,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:30,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64057223] [2020-12-09 10:00:30,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:30,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:30,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:30,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:30,992 INFO L87 Difference]: Start difference. First operand 3010 states and 11010 transitions. Second operand 10 states. [2020-12-09 10:00:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:31,146 INFO L93 Difference]: Finished difference Result 3360 states and 12055 transitions. [2020-12-09 10:00:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:31,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 10:00:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:31,151 INFO L225 Difference]: With dead ends: 3360 [2020-12-09 10:00:31,151 INFO L226 Difference]: Without dead ends: 3240 [2020-12-09 10:00:31,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-12-09 10:00:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2856. [2020-12-09 10:00:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-12-09 10:00:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 10348 transitions. [2020-12-09 10:00:31,195 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 10348 transitions. Word has length 26 [2020-12-09 10:00:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:31,195 INFO L481 AbstractCegarLoop]: Abstraction has 2856 states and 10348 transitions. [2020-12-09 10:00:31,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 10348 transitions. [2020-12-09 10:00:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:31,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:31,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:31,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-09 10:00:31,198 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1015231137, now seen corresponding path program 5 times [2020-12-09 10:00:31,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:31,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082654800] [2020-12-09 10:00:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:31,348 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 10:00:31,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082654800] [2020-12-09 10:00:31,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:31,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:31,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387014482] [2020-12-09 10:00:31,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:31,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:31,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:31,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:31,349 INFO L87 Difference]: Start difference. First operand 2856 states and 10348 transitions. Second operand 12 states. [2020-12-09 10:00:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:31,611 INFO L93 Difference]: Finished difference Result 3631 states and 13193 transitions. [2020-12-09 10:00:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:31,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-12-09 10:00:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:31,617 INFO L225 Difference]: With dead ends: 3631 [2020-12-09 10:00:31,617 INFO L226 Difference]: Without dead ends: 3559 [2020-12-09 10:00:31,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2020-12-09 10:00:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 2905. [2020-12-09 10:00:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-12-09 10:00:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 10605 transitions. [2020-12-09 10:00:31,659 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 10605 transitions. Word has length 26 [2020-12-09 10:00:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:31,659 INFO L481 AbstractCegarLoop]: Abstraction has 2905 states and 10605 transitions. [2020-12-09 10:00:31,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 10605 transitions. [2020-12-09 10:00:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:31,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:31,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:31,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-09 10:00:31,662 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash -893726613, now seen corresponding path program 3 times [2020-12-09 10:00:31,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:31,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322092278] [2020-12-09 10:00:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:31,809 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 10:00:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322092278] [2020-12-09 10:00:31,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:31,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:31,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41451886] [2020-12-09 10:00:31,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:31,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:31,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:31,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:31,810 INFO L87 Difference]: Start difference. First operand 2905 states and 10605 transitions. Second operand 12 states. [2020-12-09 10:00:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:32,088 INFO L93 Difference]: Finished difference Result 3537 states and 12449 transitions. [2020-12-09 10:00:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:32,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-12-09 10:00:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:32,093 INFO L225 Difference]: With dead ends: 3537 [2020-12-09 10:00:32,093 INFO L226 Difference]: Without dead ends: 3439 [2020-12-09 10:00:32,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-12-09 10:00:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2715. [2020-12-09 10:00:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-12-09 10:00:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 9581 transitions. [2020-12-09 10:00:32,135 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 9581 transitions. Word has length 26 [2020-12-09 10:00:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:32,135 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states and 9581 transitions. [2020-12-09 10:00:32,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 9581 transitions. [2020-12-09 10:00:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:32,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:32,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:32,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-09 10:00:32,138 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1095200096, now seen corresponding path program 1 times [2020-12-09 10:00:32,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:32,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718260563] [2020-12-09 10:00:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:32,224 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 10:00:32,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718260563] [2020-12-09 10:00:32,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:32,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:32,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364870770] [2020-12-09 10:00:32,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:32,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:32,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:32,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:32,225 INFO L87 Difference]: Start difference. First operand 2715 states and 9581 transitions. Second operand 10 states. [2020-12-09 10:00:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:32,478 INFO L93 Difference]: Finished difference Result 3947 states and 13862 transitions. [2020-12-09 10:00:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:32,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 10:00:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:32,484 INFO L225 Difference]: With dead ends: 3947 [2020-12-09 10:00:32,485 INFO L226 Difference]: Without dead ends: 3849 [2020-12-09 10:00:32,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-12-09 10:00:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 2715. [2020-12-09 10:00:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-12-09 10:00:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 9581 transitions. [2020-12-09 10:00:32,528 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 9581 transitions. Word has length 26 [2020-12-09 10:00:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:32,528 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states and 9581 transitions. [2020-12-09 10:00:32,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 9581 transitions. [2020-12-09 10:00:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 10:00:32,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:32,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:32,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-09 10:00:32,531 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash 43549556, now seen corresponding path program 2 times [2020-12-09 10:00:32,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:32,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413841809] [2020-12-09 10:00:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:32,617 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 10:00:32,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413841809] [2020-12-09 10:00:32,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:32,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:32,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905326776] [2020-12-09 10:00:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:32,618 INFO L87 Difference]: Start difference. First operand 2715 states and 9581 transitions. Second operand 10 states. [2020-12-09 10:00:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:32,883 INFO L93 Difference]: Finished difference Result 3151 states and 10988 transitions. [2020-12-09 10:00:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:32,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-09 10:00:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:32,887 INFO L225 Difference]: With dead ends: 3151 [2020-12-09 10:00:32,887 INFO L226 Difference]: Without dead ends: 3053 [2020-12-09 10:00:32,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2020-12-09 10:00:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2389. [2020-12-09 10:00:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2020-12-09 10:00:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 8340 transitions. [2020-12-09 10:00:32,925 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 8340 transitions. Word has length 26 [2020-12-09 10:00:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:32,925 INFO L481 AbstractCegarLoop]: Abstraction has 2389 states and 8340 transitions. [2020-12-09 10:00:32,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 8340 transitions. [2020-12-09 10:00:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 10:00:32,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:32,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:32,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-09 10:00:32,928 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash 907782437, now seen corresponding path program 1 times [2020-12-09 10:00:32,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:32,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729920241] [2020-12-09 10:00:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:33,068 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 10:00:33,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729920241] [2020-12-09 10:00:33,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:33,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:33,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960550162] [2020-12-09 10:00:33,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:33,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:33,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:33,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:33,069 INFO L87 Difference]: Start difference. First operand 2389 states and 8340 transitions. Second operand 11 states. [2020-12-09 10:00:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:33,382 INFO L93 Difference]: Finished difference Result 3007 states and 10647 transitions. [2020-12-09 10:00:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:33,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-09 10:00:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:33,387 INFO L225 Difference]: With dead ends: 3007 [2020-12-09 10:00:33,387 INFO L226 Difference]: Without dead ends: 2937 [2020-12-09 10:00:33,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-09 10:00:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-12-09 10:00:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2490. [2020-12-09 10:00:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2490 states. [2020-12-09 10:00:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 8800 transitions. [2020-12-09 10:00:33,429 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 8800 transitions. Word has length 27 [2020-12-09 10:00:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:33,429 INFO L481 AbstractCegarLoop]: Abstraction has 2490 states and 8800 transitions. [2020-12-09 10:00:33,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 8800 transitions. [2020-12-09 10:00:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 10:00:33,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:33,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:33,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-09 10:00:33,432 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2120484843, now seen corresponding path program 1 times [2020-12-09 10:00:33,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:33,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685121911] [2020-12-09 10:00:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:33,581 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 10:00:33,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685121911] [2020-12-09 10:00:33,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:33,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:33,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516108555] [2020-12-09 10:00:33,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:33,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:33,582 INFO L87 Difference]: Start difference. First operand 2490 states and 8800 transitions. Second operand 11 states. [2020-12-09 10:00:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:34,001 INFO L93 Difference]: Finished difference Result 3004 states and 10432 transitions. [2020-12-09 10:00:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:34,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-09 10:00:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:34,005 INFO L225 Difference]: With dead ends: 3004 [2020-12-09 10:00:34,005 INFO L226 Difference]: Without dead ends: 2889 [2020-12-09 10:00:34,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-12-09 10:00:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2349. [2020-12-09 10:00:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-12-09 10:00:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 8184 transitions. [2020-12-09 10:00:34,040 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 8184 transitions. Word has length 27 [2020-12-09 10:00:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:34,040 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 8184 transitions. [2020-12-09 10:00:34,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 8184 transitions. [2020-12-09 10:00:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 10:00:34,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:34,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:34,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-09 10:00:34,043 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1524893631, now seen corresponding path program 2 times [2020-12-09 10:00:34,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:34,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583360632] [2020-12-09 10:00:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:34,218 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 10:00:34,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583360632] [2020-12-09 10:00:34,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:34,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 10:00:34,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048139428] [2020-12-09 10:00:34,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:00:34,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:34,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:00:34,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:34,219 INFO L87 Difference]: Start difference. First operand 2349 states and 8184 transitions. Second operand 13 states. [2020-12-09 10:00:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:34,742 INFO L93 Difference]: Finished difference Result 3028 states and 10567 transitions. [2020-12-09 10:00:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 10:00:34,742 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-09 10:00:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:34,746 INFO L225 Difference]: With dead ends: 3028 [2020-12-09 10:00:34,747 INFO L226 Difference]: Without dead ends: 2886 [2020-12-09 10:00:34,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-12-09 10:00:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-12-09 10:00:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2087. [2020-12-09 10:00:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-12-09 10:00:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 7249 transitions. [2020-12-09 10:00:34,777 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 7249 transitions. Word has length 27 [2020-12-09 10:00:34,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:34,777 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 7249 transitions. [2020-12-09 10:00:34,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:00:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 7249 transitions. [2020-12-09 10:00:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 10:00:34,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:34,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:34,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-09 10:00:34,780 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1646398155, now seen corresponding path program 2 times [2020-12-09 10:00:34,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:34,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110983746] [2020-12-09 10:00:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:34,959 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 10:00:34,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110983746] [2020-12-09 10:00:34,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:34,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 10:00:34,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298402661] [2020-12-09 10:00:34,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:00:34,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:00:34,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:34,960 INFO L87 Difference]: Start difference. First operand 2087 states and 7249 transitions. Second operand 13 states. [2020-12-09 10:00:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:35,353 INFO L93 Difference]: Finished difference Result 2170 states and 7294 transitions. [2020-12-09 10:00:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:35,353 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-09 10:00:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:35,356 INFO L225 Difference]: With dead ends: 2170 [2020-12-09 10:00:35,356 INFO L226 Difference]: Without dead ends: 1933 [2020-12-09 10:00:35,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-12-09 10:00:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-12-09 10:00:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1392. [2020-12-09 10:00:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2020-12-09 10:00:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4530 transitions. [2020-12-09 10:00:35,375 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4530 transitions. Word has length 27 [2020-12-09 10:00:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:35,375 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 4530 transitions. [2020-12-09 10:00:35,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:00:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4530 transitions. [2020-12-09 10:00:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:35,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:35,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-09 10:00:35,377 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:35,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1547272975, now seen corresponding path program 1 times [2020-12-09 10:00:35,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:35,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610489424] [2020-12-09 10:00:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:35,395 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 10:00:35,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610489424] [2020-12-09 10:00:35,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:35,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:35,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133671145] [2020-12-09 10:00:35,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:35,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:35,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:35,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:35,396 INFO L87 Difference]: Start difference. First operand 1392 states and 4530 transitions. Second operand 5 states. [2020-12-09 10:00:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:35,446 INFO L93 Difference]: Finished difference Result 1682 states and 5310 transitions. [2020-12-09 10:00:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:35,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-12-09 10:00:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:35,448 INFO L225 Difference]: With dead ends: 1682 [2020-12-09 10:00:35,448 INFO L226 Difference]: Without dead ends: 1391 [2020-12-09 10:00:35,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-09 10:00:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2020-12-09 10:00:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1391 states. [2020-12-09 10:00:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4528 transitions. [2020-12-09 10:00:35,465 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4528 transitions. Word has length 28 [2020-12-09 10:00:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:35,465 INFO L481 AbstractCegarLoop]: Abstraction has 1391 states and 4528 transitions. [2020-12-09 10:00:35,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4528 transitions. [2020-12-09 10:00:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:35,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:35,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:35,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-09 10:00:35,467 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1637295713, now seen corresponding path program 2 times [2020-12-09 10:00:35,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:35,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670797080] [2020-12-09 10:00:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:35,492 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 10:00:35,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670797080] [2020-12-09 10:00:35,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:35,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:35,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038270670] [2020-12-09 10:00:35,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:00:35,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:00:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:35,493 INFO L87 Difference]: Start difference. First operand 1391 states and 4528 transitions. Second operand 6 states. [2020-12-09 10:00:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:35,566 INFO L93 Difference]: Finished difference Result 1674 states and 5299 transitions. [2020-12-09 10:00:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:35,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-09 10:00:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:35,568 INFO L225 Difference]: With dead ends: 1674 [2020-12-09 10:00:35,568 INFO L226 Difference]: Without dead ends: 1384 [2020-12-09 10:00:35,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-12-09 10:00:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2020-12-09 10:00:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-12-09 10:00:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 4512 transitions. [2020-12-09 10:00:35,585 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 4512 transitions. Word has length 28 [2020-12-09 10:00:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:35,585 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 4512 transitions. [2020-12-09 10:00:35,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:00:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 4512 transitions. [2020-12-09 10:00:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:35,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:35,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:35,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-09 10:00:35,587 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 459929903, now seen corresponding path program 3 times [2020-12-09 10:00:35,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:35,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921939478] [2020-12-09 10:00:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:35,648 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 10:00:35,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921939478] [2020-12-09 10:00:35,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:35,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:00:35,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988878684] [2020-12-09 10:00:35,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:00:35,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:35,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:00:35,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:35,648 INFO L87 Difference]: Start difference. First operand 1384 states and 4512 transitions. Second operand 8 states. [2020-12-09 10:00:35,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:35,822 INFO L93 Difference]: Finished difference Result 1663 states and 5277 transitions. [2020-12-09 10:00:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:35,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-09 10:00:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:35,824 INFO L225 Difference]: With dead ends: 1663 [2020-12-09 10:00:35,824 INFO L226 Difference]: Without dead ends: 1380 [2020-12-09 10:00:35,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-12-09 10:00:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1380. [2020-12-09 10:00:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2020-12-09 10:00:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4503 transitions. [2020-12-09 10:00:35,841 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4503 transitions. Word has length 28 [2020-12-09 10:00:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:35,841 INFO L481 AbstractCegarLoop]: Abstraction has 1380 states and 4503 transitions. [2020-12-09 10:00:35,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:00:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4503 transitions. [2020-12-09 10:00:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:35,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:35,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-09 10:00:35,843 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1629184431, now seen corresponding path program 4 times [2020-12-09 10:00:35,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:35,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119260685] [2020-12-09 10:00:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:35,925 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 10:00:35,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119260685] [2020-12-09 10:00:35,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:35,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 10:00:35,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793528034] [2020-12-09 10:00:35,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 10:00:35,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 10:00:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:00:35,926 INFO L87 Difference]: Start difference. First operand 1380 states and 4503 transitions. Second operand 9 states. [2020-12-09 10:00:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:36,124 INFO L93 Difference]: Finished difference Result 1650 states and 5250 transitions. [2020-12-09 10:00:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:36,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-09 10:00:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:36,127 INFO L225 Difference]: With dead ends: 1650 [2020-12-09 10:00:36,127 INFO L226 Difference]: Without dead ends: 1371 [2020-12-09 10:00:36,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-12-09 10:00:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2020-12-09 10:00:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-12-09 10:00:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4479 transitions. [2020-12-09 10:00:36,144 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4479 transitions. Word has length 28 [2020-12-09 10:00:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:36,144 INFO L481 AbstractCegarLoop]: Abstraction has 1371 states and 4479 transitions. [2020-12-09 10:00:36,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 10:00:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4479 transitions. [2020-12-09 10:00:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:36,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:36,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:36,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-09 10:00:36,146 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1509106773, now seen corresponding path program 5 times [2020-12-09 10:00:36,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:36,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357719104] [2020-12-09 10:00:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:36,266 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 10:00:36,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357719104] [2020-12-09 10:00:36,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:36,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 10:00:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573410959] [2020-12-09 10:00:36,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 10:00:36,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:36,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 10:00:36,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-09 10:00:36,267 INFO L87 Difference]: Start difference. First operand 1371 states and 4479 transitions. Second operand 10 states. [2020-12-09 10:00:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:36,462 INFO L93 Difference]: Finished difference Result 1627 states and 5185 transitions. [2020-12-09 10:00:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:36,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-12-09 10:00:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:36,464 INFO L225 Difference]: With dead ends: 1627 [2020-12-09 10:00:36,464 INFO L226 Difference]: Without dead ends: 1357 [2020-12-09 10:00:36,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-12-09 10:00:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1357. [2020-12-09 10:00:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2020-12-09 10:00:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4426 transitions. [2020-12-09 10:00:36,481 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4426 transitions. Word has length 28 [2020-12-09 10:00:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:36,481 INFO L481 AbstractCegarLoop]: Abstraction has 1357 states and 4426 transitions. [2020-12-09 10:00:36,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 10:00:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4426 transitions. [2020-12-09 10:00:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:36,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:36,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:36,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-09 10:00:36,483 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 446339391, now seen corresponding path program 6 times [2020-12-09 10:00:36,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:36,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944281498] [2020-12-09 10:00:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:36,577 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 10:00:36,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944281498] [2020-12-09 10:00:36,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:36,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:36,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869696911] [2020-12-09 10:00:36,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:36,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:36,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:36,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:36,578 INFO L87 Difference]: Start difference. First operand 1357 states and 4426 transitions. Second operand 11 states. [2020-12-09 10:00:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:36,783 INFO L93 Difference]: Finished difference Result 1917 states and 6244 transitions. [2020-12-09 10:00:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:36,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-09 10:00:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:36,786 INFO L225 Difference]: With dead ends: 1917 [2020-12-09 10:00:36,786 INFO L226 Difference]: Without dead ends: 1669 [2020-12-09 10:00:36,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-09 10:00:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-12-09 10:00:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1349. [2020-12-09 10:00:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-12-09 10:00:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4390 transitions. [2020-12-09 10:00:36,804 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4390 transitions. Word has length 28 [2020-12-09 10:00:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:36,804 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 4390 transitions. [2020-12-09 10:00:36,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4390 transitions. [2020-12-09 10:00:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:36,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:36,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-09 10:00:36,805 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2112935205, now seen corresponding path program 7 times [2020-12-09 10:00:36,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:36,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561001472] [2020-12-09 10:00:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:36,891 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 10:00:36,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561001472] [2020-12-09 10:00:36,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:36,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:36,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424100723] [2020-12-09 10:00:36,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:36,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:36,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:36,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:36,892 INFO L87 Difference]: Start difference. First operand 1349 states and 4390 transitions. Second operand 11 states. [2020-12-09 10:00:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:37,042 INFO L93 Difference]: Finished difference Result 1549 states and 4908 transitions. [2020-12-09 10:00:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:00:37,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-09 10:00:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:37,044 INFO L225 Difference]: With dead ends: 1549 [2020-12-09 10:00:37,044 INFO L226 Difference]: Without dead ends: 1317 [2020-12-09 10:00:37,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 10:00:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-12-09 10:00:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2020-12-09 10:00:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-12-09 10:00:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 4230 transitions. [2020-12-09 10:00:37,060 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 4230 transitions. Word has length 28 [2020-12-09 10:00:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:37,060 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 4230 transitions. [2020-12-09 10:00:37,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 4230 transitions. [2020-12-09 10:00:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:00:37,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:37,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:37,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-12-09 10:00:37,062 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -94355749, now seen corresponding path program 8 times [2020-12-09 10:00:37,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:37,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898835704] [2020-12-09 10:00:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:37,240 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 10:00:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898835704] [2020-12-09 10:00:37,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:37,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 10:00:37,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272770478] [2020-12-09 10:00:37,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:00:37,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:37,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:00:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:37,241 INFO L87 Difference]: Start difference. First operand 1317 states and 4230 transitions. Second operand 13 states. [2020-12-09 10:00:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:37,645 INFO L93 Difference]: Finished difference Result 1485 states and 4665 transitions. [2020-12-09 10:00:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:37,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-12-09 10:00:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:37,646 INFO L225 Difference]: With dead ends: 1485 [2020-12-09 10:00:37,646 INFO L226 Difference]: Without dead ends: 1053 [2020-12-09 10:00:37,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-12-09 10:00:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-12-09 10:00:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 905. [2020-12-09 10:00:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-12-09 10:00:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2760 transitions. [2020-12-09 10:00:37,658 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 2760 transitions. Word has length 28 [2020-12-09 10:00:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:37,658 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 2760 transitions. [2020-12-09 10:00:37,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:00:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 2760 transitions. [2020-12-09 10:00:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:37,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:37,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-12-09 10:00:37,659 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:37,659 INFO L82 PathProgramCache]: Analyzing trace with hash -67296542, now seen corresponding path program 1 times [2020-12-09 10:00:37,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:37,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63364189] [2020-12-09 10:00:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:37,815 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 10:00:37,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63364189] [2020-12-09 10:00:37,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:37,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 10:00:37,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635733071] [2020-12-09 10:00:37,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:00:37,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:37,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:00:37,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:37,816 INFO L87 Difference]: Start difference. First operand 905 states and 2760 transitions. Second operand 13 states. [2020-12-09 10:00:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:38,241 INFO L93 Difference]: Finished difference Result 1701 states and 5319 transitions. [2020-12-09 10:00:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:00:38,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-09 10:00:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:38,244 INFO L225 Difference]: With dead ends: 1701 [2020-12-09 10:00:38,244 INFO L226 Difference]: Without dead ends: 1433 [2020-12-09 10:00:38,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-09 10:00:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-12-09 10:00:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 949. [2020-12-09 10:00:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-12-09 10:00:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 2878 transitions. [2020-12-09 10:00:38,257 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 2878 transitions. Word has length 30 [2020-12-09 10:00:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:38,257 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 2878 transitions. [2020-12-09 10:00:38,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:00:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 2878 transitions. [2020-12-09 10:00:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:38,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:38,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:38,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-12-09 10:00:38,258 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:38,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1668396158, now seen corresponding path program 2 times [2020-12-09 10:00:38,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:38,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594871063] [2020-12-09 10:00:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:38,428 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 10:00:38,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594871063] [2020-12-09 10:00:38,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:38,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 10:00:38,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496643585] [2020-12-09 10:00:38,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:00:38,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:38,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:00:38,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:00:38,429 INFO L87 Difference]: Start difference. First operand 949 states and 2878 transitions. Second operand 13 states. [2020-12-09 10:00:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:38,782 INFO L93 Difference]: Finished difference Result 1319 states and 4018 transitions. [2020-12-09 10:00:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:00:38,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-09 10:00:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:38,783 INFO L225 Difference]: With dead ends: 1319 [2020-12-09 10:00:38,783 INFO L226 Difference]: Without dead ends: 1059 [2020-12-09 10:00:38,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-09 10:00:38,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-12-09 10:00:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 933. [2020-12-09 10:00:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-12-09 10:00:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2834 transitions. [2020-12-09 10:00:38,795 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2834 transitions. Word has length 30 [2020-12-09 10:00:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:38,795 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 2834 transitions. [2020-12-09 10:00:38,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:00:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2834 transitions. [2020-12-09 10:00:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:38,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:38,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:38,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-09 10:00:38,796 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash -41395204, now seen corresponding path program 3 times [2020-12-09 10:00:38,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:38,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420355912] [2020-12-09 10:00:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:38,930 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 10:00:38,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420355912] [2020-12-09 10:00:38,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:38,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:38,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213727750] [2020-12-09 10:00:38,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:38,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:38,931 INFO L87 Difference]: Start difference. First operand 933 states and 2834 transitions. Second operand 12 states. [2020-12-09 10:00:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:39,109 INFO L93 Difference]: Finished difference Result 1221 states and 3704 transitions. [2020-12-09 10:00:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:39,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-09 10:00:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:39,111 INFO L225 Difference]: With dead ends: 1221 [2020-12-09 10:00:39,111 INFO L226 Difference]: Without dead ends: 1049 [2020-12-09 10:00:39,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-12-09 10:00:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 921. [2020-12-09 10:00:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-12-09 10:00:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2800 transitions. [2020-12-09 10:00:39,121 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2800 transitions. Word has length 30 [2020-12-09 10:00:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:39,121 INFO L481 AbstractCegarLoop]: Abstraction has 921 states and 2800 transitions. [2020-12-09 10:00:39,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2800 transitions. [2020-12-09 10:00:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:39,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:39,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:39,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-12-09 10:00:39,122 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1694297496, now seen corresponding path program 4 times [2020-12-09 10:00:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897512620] [2020-12-09 10:00:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:39,242 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 10:00:39,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897512620] [2020-12-09 10:00:39,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:39,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:39,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256366494] [2020-12-09 10:00:39,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:39,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:39,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:39,243 INFO L87 Difference]: Start difference. First operand 921 states and 2800 transitions. Second operand 12 states. [2020-12-09 10:00:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:39,430 INFO L93 Difference]: Finished difference Result 760 states and 2253 transitions. [2020-12-09 10:00:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:39,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-09 10:00:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:39,431 INFO L225 Difference]: With dead ends: 760 [2020-12-09 10:00:39,432 INFO L226 Difference]: Without dead ends: 492 [2020-12-09 10:00:39,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-12-09 10:00:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 368. [2020-12-09 10:00:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-12-09 10:00:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1047 transitions. [2020-12-09 10:00:39,436 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1047 transitions. Word has length 30 [2020-12-09 10:00:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:39,436 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 1047 transitions. [2020-12-09 10:00:39,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1047 transitions. [2020-12-09 10:00:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:39,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:39,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:39,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-12-09 10:00:39,437 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1256010255, now seen corresponding path program 1 times [2020-12-09 10:00:39,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:39,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779788804] [2020-12-09 10:00:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:39,586 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 10:00:39,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779788804] [2020-12-09 10:00:39,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:39,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:39,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890270724] [2020-12-09 10:00:39,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:39,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:39,587 INFO L87 Difference]: Start difference. First operand 368 states and 1047 transitions. Second operand 12 states. [2020-12-09 10:00:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:39,899 INFO L93 Difference]: Finished difference Result 478 states and 1317 transitions. [2020-12-09 10:00:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 10:00:39,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-09 10:00:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:39,900 INFO L225 Difference]: With dead ends: 478 [2020-12-09 10:00:39,900 INFO L226 Difference]: Without dead ends: 370 [2020-12-09 10:00:39,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-12-09 10:00:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-12-09 10:00:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2020-12-09 10:00:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-12-09 10:00:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1041 transitions. [2020-12-09 10:00:39,904 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1041 transitions. Word has length 30 [2020-12-09 10:00:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:39,905 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 1041 transitions. [2020-12-09 10:00:39,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1041 transitions. [2020-12-09 10:00:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:39,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:39,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:39,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-12-09 10:00:39,905 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash -766721315, now seen corresponding path program 2 times [2020-12-09 10:00:39,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:39,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106385080] [2020-12-09 10:00:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:40,087 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 10:00:40,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106385080] [2020-12-09 10:00:40,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:40,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 10:00:40,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080769701] [2020-12-09 10:00:40,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 10:00:40,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 10:00:40,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:00:40,088 INFO L87 Difference]: Start difference. First operand 366 states and 1041 transitions. Second operand 12 states. [2020-12-09 10:00:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:40,485 INFO L93 Difference]: Finished difference Result 455 states and 1267 transitions. [2020-12-09 10:00:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:00:40,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-09 10:00:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:40,485 INFO L225 Difference]: With dead ends: 455 [2020-12-09 10:00:40,485 INFO L226 Difference]: Without dead ends: 312 [2020-12-09 10:00:40,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-09 10:00:40,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-09 10:00:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-12-09 10:00:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-09 10:00:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 866 transitions. [2020-12-09 10:00:40,489 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 866 transitions. Word has length 30 [2020-12-09 10:00:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:40,489 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 866 transitions. [2020-12-09 10:00:40,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 866 transitions. [2020-12-09 10:00:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 10:00:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:40,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:40,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-12-09 10:00:40,489 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-09 10:00:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 660110225, now seen corresponding path program 3 times [2020-12-09 10:00:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:40,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015022364] [2020-12-09 10:00:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:40,588 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 10:00:40,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015022364] [2020-12-09 10:00:40,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:40,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 10:00:40,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495988346] [2020-12-09 10:00:40,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:00:40,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:00:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:00:40,589 INFO L87 Difference]: Start difference. First operand 312 states and 866 transitions. Second operand 11 states. [2020-12-09 10:00:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:40,743 INFO L93 Difference]: Finished difference Result 123 states and 279 transitions. [2020-12-09 10:00:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:00:40,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-12-09 10:00:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:40,743 INFO L225 Difference]: With dead ends: 123 [2020-12-09 10:00:40,743 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:00:40,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-09 10:00:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:00:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:00:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:00:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:00:40,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-09 10:00:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:00:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:00:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:00:40,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:00:40,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-12-09 10:00:40,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:00:40 BasicIcfg [2020-12-09 10:00:40,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:00:40,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:00:40,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:00:40,746 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:00:40,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:14" (3/4) ... [2020-12-09 10:00:40,749 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:00:40,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2020-12-09 10:00:40,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-12-09 10:00:40,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-12-09 10:00:40,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2020-12-09 10:00:40,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 10:00:40,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 10:00:40,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:00:40,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:00:40,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_708dde41-e622-40d3-aef0-d9fcc8038383/bin/utaipan/witness.graphml [2020-12-09 10:00:40,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:00:40,775 INFO L168 Benchmark]: Toolchain (without parser) took 27361.02 ms. Allocated memory was 113.2 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 71.0 MB in the beginning and 787.5 MB in the end (delta: -716.5 MB). Peak memory consumption was 603.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,775 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:00:40,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.63 ms. Allocated memory is still 113.2 MB. Free memory was 70.9 MB in the beginning and 71.5 MB in the end (delta: -664.4 kB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 68.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,776 INFO L168 Benchmark]: Boogie Preprocessor took 27.51 ms. Allocated memory is still 113.2 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,776 INFO L168 Benchmark]: RCFGBuilder took 308.95 ms. Allocated memory is still 113.2 MB. Free memory was 67.3 MB in the beginning and 65.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,776 INFO L168 Benchmark]: TraceAbstraction took 26438.85 ms. Allocated memory was 113.2 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 64.9 MB in the beginning and 790.7 MB in the end (delta: -725.8 MB). Peak memory consumption was 595.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,777 INFO L168 Benchmark]: Witness Printer took 27.63 ms. Allocated memory is still 1.4 GB. Free memory was 790.7 MB in the beginning and 787.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:40,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 509.63 ms. Allocated memory is still 113.2 MB. Free memory was 70.9 MB in the beginning and 71.5 MB in the end (delta: -664.4 kB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 68.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.51 ms. Allocated memory is still 113.2 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 308.95 ms. Allocated memory is still 113.2 MB. Free memory was 67.3 MB in the beginning and 65.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26438.85 ms. Allocated memory was 113.2 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 64.9 MB in the beginning and 790.7 MB in the end (delta: -725.8 MB). Peak memory consumption was 595.0 MB. Max. memory is 16.1 GB. * Witness Printer took 27.63 ms. Allocated memory is still 1.4 GB. Free memory was 790.7 MB in the beginning and 787.5 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 4085 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 1350 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 173 PlacesBefore, 95 PlacesAfterwards, 255 TransitionsBefore, 176 TransitionsAfterwards, 4982 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 87 TotalNumberOfCompositions, 55868 MoverChecksTotal - PositiveResult [Line: 1123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.2s, OverallIterations: 58, TraceHistogramMax: 1, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 5215 SDtfs, 9488 SDslu, 14563 SDs, 0 SdLazy, 9094 SolverSat, 1447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 697 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5288occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 58 MinimizatonAttempts, 37400 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1385 NumberOfCodeBlocks, 1385 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 479069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 58 InterpolantComputations, 58 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...