./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 499e83f84eda8d3ed438ea1340f9ee54d9540a66 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@929e82f --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:20,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:20,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:20,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:20,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:20,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:20,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:20,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:20,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:20,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:20,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:20,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:20,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:20,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:20,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:20,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:20,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:20,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:20,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:20,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:20,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:20,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:20,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:20,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:20,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:20,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:20,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:20,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:20,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:20,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:20,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:20,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:20,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:20,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:20,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:20,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:20,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:20,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:20,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:20,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:20,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:20,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:25:20,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:20,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:20,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:20,737 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:20,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:20,737 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:20,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:20,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:20,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:20,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:20,739 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:20,739 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:20,740 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:20,740 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:20,740 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:20,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:20,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:20,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:25:20,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:20,742 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:25:20,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:20,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:20,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:20,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:20,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:20,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:20,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:20,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:20,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:20,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:20,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:20,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:20,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:20,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:20,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:20,747 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 499e83f84eda8d3ed438ea1340f9ee54d9540a66 [2021-10-11 02:25:21,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:21,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:21,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:21,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:21,129 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:21,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-10-11 02:25:21,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/data/668243e2d/c13002c466ea4b9fb879f46771c84ea8/FLAG1a43f7a1c [2021-10-11 02:25:21,813 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:21,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-10-11 02:25:21,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/data/668243e2d/c13002c466ea4b9fb879f46771c84ea8/FLAG1a43f7a1c [2021-10-11 02:25:22,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/data/668243e2d/c13002c466ea4b9fb879f46771c84ea8 [2021-10-11 02:25:22,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:22,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:22,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:22,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:22,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:22,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e271cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22, skipping insertion in model container [2021-10-11 02:25:22,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:22,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:22,407 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/sv-benchmarks/c/bitvector/byte_add_2-1.i[863,876] [2021-10-11 02:25:22,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:22,456 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:22,467 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/sv-benchmarks/c/bitvector/byte_add_2-1.i[863,876] [2021-10-11 02:25:22,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:22,508 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:22,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22 WrapperNode [2021-10-11 02:25:22,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:22,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:22,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:22,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:22,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:22,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:22,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:22,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:22,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... [2021-10-11 02:25:22,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:22,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:22,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:22,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:22,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:23,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:23,401 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:25:23,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:23 BoogieIcfgContainer [2021-10-11 02:25:23,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:23,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:23,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:23,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:22" (1/3) ... [2021-10-11 02:25:23,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3e5320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:23, skipping insertion in model container [2021-10-11 02:25:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:22" (2/3) ... [2021-10-11 02:25:23,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3e5320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:23, skipping insertion in model container [2021-10-11 02:25:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:23" (3/3) ... [2021-10-11 02:25:23,414 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2021-10-11 02:25:23,428 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:23,432 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2021-10-11 02:25:23,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-11 02:25:23,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:23,480 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:23,481 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:23,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:23,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:23,481 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:23,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:23,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2021-10-11 02:25:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:25:23,511 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:23,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:25:23,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash 288461, now seen corresponding path program 1 times [2021-10-11 02:25:23,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:23,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080353765] [2021-10-11 02:25:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:23,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080353765] [2021-10-11 02:25:23,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:23,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:25:23,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397406652] [2021-10-11 02:25:23,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:25:23,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:25:23,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:25:23,732 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2021-10-11 02:25:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:23,758 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-10-11 02:25:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:25:23,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2021-10-11 02:25:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:23,781 INFO L225 Difference]: With dead ends: 99 [2021-10-11 02:25:23,788 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:25:23,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:25:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:25:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-11 02:25:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:25:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-10-11 02:25:23,841 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2021-10-11 02:25:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:23,841 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-10-11 02:25:23,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:25:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-10-11 02:25:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:25:23,844 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:23,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:23,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:23,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash -570441695, now seen corresponding path program 1 times [2021-10-11 02:25:23,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:23,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066026898] [2021-10-11 02:25:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066026898] [2021-10-11 02:25:24,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:24,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:24,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891622315] [2021-10-11 02:25:24,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:24,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:24,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:24,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:24,030 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2021-10-11 02:25:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:24,185 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-10-11 02:25:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:24,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-10-11 02:25:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:24,189 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:25:24,191 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 02:25:24,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 02:25:24,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-10-11 02:25:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:25:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-10-11 02:25:24,213 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2021-10-11 02:25:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:24,214 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-10-11 02:25:24,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-10-11 02:25:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:25:24,216 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:24,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:24,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:24,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1325796692, now seen corresponding path program 1 times [2021-10-11 02:25:24,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:24,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959660755] [2021-10-11 02:25:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959660755] [2021-10-11 02:25:24,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040008365] [2021-10-11 02:25:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:24,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:25:24,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [528015824] [2021-10-11 02:25:24,607 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-11 02:25:24,607 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:24,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:24,618 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:24,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:24,915 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:25,224 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-10-11 02:25:25,568 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:25:25,866 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-10-11 02:25:26,169 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2021-10-11 02:25:26,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:26,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 5] total 12 [2021-10-11 02:25:26,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965092293] [2021-10-11 02:25:26,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:25:26,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:26,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:25:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:25:26,174 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 6 states. [2021-10-11 02:25:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:26,542 INFO L93 Difference]: Finished difference Result 198 states and 249 transitions. [2021-10-11 02:25:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:25:26,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:25:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:26,544 INFO L225 Difference]: With dead ends: 198 [2021-10-11 02:25:26,545 INFO L226 Difference]: Without dead ends: 134 [2021-10-11 02:25:26,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:25:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-11 02:25:26,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2021-10-11 02:25:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:25:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-10-11 02:25:26,554 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 15 [2021-10-11 02:25:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:26,555 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-10-11 02:25:26,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:25:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-10-11 02:25:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:25:26,556 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:26,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:26,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:25:26,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1639560186, now seen corresponding path program 1 times [2021-10-11 02:25:26,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:26,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324133995] [2021-10-11 02:25:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324133995] [2021-10-11 02:25:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786960973] [2021-10-11 02:25:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:26,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:25:26,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:26,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:26,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2101869892] [2021-10-11 02:25:27,001 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-11 02:25:27,001 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:27,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:27,001 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:27,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:27,264 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:27,473 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-10-11 02:25:27,846 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-10-11 02:25:28,070 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-10-11 02:25:28,618 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-10-11 02:25:28,941 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-10-11 02:25:29,346 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2021-10-11 02:25:29,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:29,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 5] total 14 [2021-10-11 02:25:29,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417575304] [2021-10-11 02:25:29,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:25:29,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:29,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:25:29,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:25:29,352 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2021-10-11 02:25:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:30,099 INFO L93 Difference]: Finished difference Result 255 states and 317 transitions. [2021-10-11 02:25:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:25:30,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-10-11 02:25:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:30,101 INFO L225 Difference]: With dead ends: 255 [2021-10-11 02:25:30,101 INFO L226 Difference]: Without dead ends: 191 [2021-10-11 02:25:30,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:25:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-11 02:25:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 88. [2021-10-11 02:25:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:25:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-10-11 02:25:30,111 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 18 [2021-10-11 02:25:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:30,111 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-10-11 02:25:30,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:25:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-10-11 02:25:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:25:30,112 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:30,113 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] [2021-10-11 02:25:30,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:30,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1150058529, now seen corresponding path program 1 times [2021-10-11 02:25:30,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:30,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659809986] [2021-10-11 02:25:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:30,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659809986] [2021-10-11 02:25:30,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902780535] [2021-10-11 02:25:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:30,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:25:30,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:30,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:30,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340557375] [2021-10-11 02:25:30,585 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-10-11 02:25:30,586 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:30,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:30,586 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:30,587 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:30,723 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:30,942 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-10-11 02:25:31,139 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-10-11 02:25:31,313 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-10-11 02:25:31,508 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-10-11 02:25:31,713 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:25:32,165 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2021-10-11 02:25:32,602 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2021-10-11 02:25:33,140 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-10-11 02:25:33,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:33,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 5] total 17 [2021-10-11 02:25:33,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864765756] [2021-10-11 02:25:33,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:25:33,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:33,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:25:33,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:25:33,144 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 10 states. [2021-10-11 02:25:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:34,023 INFO L93 Difference]: Finished difference Result 312 states and 385 transitions. [2021-10-11 02:25:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:25:34,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2021-10-11 02:25:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:34,025 INFO L225 Difference]: With dead ends: 312 [2021-10-11 02:25:34,025 INFO L226 Difference]: Without dead ends: 248 [2021-10-11 02:25:34,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:25:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-11 02:25:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 88. [2021-10-11 02:25:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:25:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-10-11 02:25:34,036 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 21 [2021-10-11 02:25:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:34,036 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-10-11 02:25:34,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:25:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-10-11 02:25:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:25:34,038 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:34,038 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] [2021-10-11 02:25:34,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:34,242 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:34,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1912947963, now seen corresponding path program 1 times [2021-10-11 02:25:34,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:34,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073570206] [2021-10-11 02:25:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:34,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073570206] [2021-10-11 02:25:34,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381022369] [2021-10-11 02:25:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:34,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:25:34,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:34,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:34,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:25:34,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2021-10-11 02:25:34,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275203025] [2021-10-11 02:25:34,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:34,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:25:34,548 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 5 states. [2021-10-11 02:25:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:34,760 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2021-10-11 02:25:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:34,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-10-11 02:25:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:34,762 INFO L225 Difference]: With dead ends: 128 [2021-10-11 02:25:34,762 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 02:25:34,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:25:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 02:25:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2021-10-11 02:25:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 02:25:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2021-10-11 02:25:34,770 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 23 [2021-10-11 02:25:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:34,771 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-10-11 02:25:34,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2021-10-11 02:25:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:25:34,772 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:34,772 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] [2021-10-11 02:25:34,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:34,986 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:34,986 INFO L82 PathProgramCache]: Analyzing trace with hash -973038618, now seen corresponding path program 1 times [2021-10-11 02:25:34,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:34,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114151780] [2021-10-11 02:25:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:35,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114151780] [2021-10-11 02:25:35,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:35,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:35,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146424377] [2021-10-11 02:25:35,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:35,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:35,071 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 5 states. [2021-10-11 02:25:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:35,210 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2021-10-11 02:25:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:25:35,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-10-11 02:25:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:35,212 INFO L225 Difference]: With dead ends: 130 [2021-10-11 02:25:35,212 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 02:25:35,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 02:25:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-10-11 02:25:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 02:25:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2021-10-11 02:25:35,219 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 26 [2021-10-11 02:25:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:35,219 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-10-11 02:25:35,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2021-10-11 02:25:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:25:35,221 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:35,221 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] [2021-10-11 02:25:35,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:25:35,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:35,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1992369865, now seen corresponding path program 1 times [2021-10-11 02:25:35,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:35,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678056085] [2021-10-11 02:25:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:35,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678056085] [2021-10-11 02:25:35,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408900089] [2021-10-11 02:25:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:35,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:25:35,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:35,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:35,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:35,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2021-10-11 02:25:35,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371925722] [2021-10-11 02:25:35,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:25:35,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:35,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:25:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:25:35,486 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 6 states. [2021-10-11 02:25:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:35,712 INFO L93 Difference]: Finished difference Result 182 states and 251 transitions. [2021-10-11 02:25:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:25:35,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-10-11 02:25:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:35,714 INFO L225 Difference]: With dead ends: 182 [2021-10-11 02:25:35,714 INFO L226 Difference]: Without dead ends: 142 [2021-10-11 02:25:35,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:25:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-11 02:25:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-10-11 02:25:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-10-11 02:25:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2021-10-11 02:25:35,721 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 30 [2021-10-11 02:25:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:35,722 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2021-10-11 02:25:35,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:25:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2021-10-11 02:25:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 02:25:35,724 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:35,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2021-10-11 02:25:35,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-11 02:25:35,946 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 273973113, now seen corresponding path program 1 times [2021-10-11 02:25:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:35,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148248258] [2021-10-11 02:25:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:25:36,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148248258] [2021-10-11 02:25:36,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539447143] [2021-10-11 02:25:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:36,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 02:25:36,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:25:36,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:25:37,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1944762494] [2021-10-11 02:25:37,086 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-10-11 02:25:37,087 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:37,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:37,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:37,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:38,356 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:38,584 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-10-11 02:25:38,868 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-10-11 02:25:39,167 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:25:39,464 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-10-11 02:25:39,779 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-10-11 02:25:39,980 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-10-11 02:25:40,168 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-10-11 02:25:40,336 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-10-11 02:25:40,815 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-10-11 02:25:41,396 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-10-11 02:25:41,727 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-10-11 02:25:41,924 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-10-11 02:25:42,167 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-10-11 02:25:42,493 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:42,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:42,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 21 [2021-10-11 02:25:42,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525533695] [2021-10-11 02:25:42,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-10-11 02:25:42,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-11 02:25:42,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2021-10-11 02:25:42,496 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand 21 states. [2021-10-11 02:25:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:43,785 INFO L93 Difference]: Finished difference Result 489 states and 629 transitions. [2021-10-11 02:25:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:25:43,786 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2021-10-11 02:25:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:43,789 INFO L225 Difference]: With dead ends: 489 [2021-10-11 02:25:43,790 INFO L226 Difference]: Without dead ends: 398 [2021-10-11 02:25:43,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 114 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2021-10-11 02:25:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-11 02:25:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 226. [2021-10-11 02:25:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 02:25:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 305 transitions. [2021-10-11 02:25:43,805 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 305 transitions. Word has length 48 [2021-10-11 02:25:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:43,805 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 305 transitions. [2021-10-11 02:25:43,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-10-11 02:25:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 305 transitions. [2021-10-11 02:25:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:25:43,808 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:43,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 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, 1] [2021-10-11 02:25:44,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:44,034 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1950630877, now seen corresponding path program 1 times [2021-10-11 02:25:44,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:44,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081397725] [2021-10-11 02:25:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:25:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081397725] [2021-10-11 02:25:44,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:44,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:44,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618284090] [2021-10-11 02:25:44,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:44,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:44,081 INFO L87 Difference]: Start difference. First operand 226 states and 305 transitions. Second operand 3 states. [2021-10-11 02:25:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:44,164 INFO L93 Difference]: Finished difference Result 439 states and 600 transitions. [2021-10-11 02:25:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:44,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:25:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:44,168 INFO L225 Difference]: With dead ends: 439 [2021-10-11 02:25:44,168 INFO L226 Difference]: Without dead ends: 251 [2021-10-11 02:25:44,169 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 [2021-10-11 02:25:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-11 02:25:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 237. [2021-10-11 02:25:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-10-11 02:25:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 321 transitions. [2021-10-11 02:25:44,179 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 321 transitions. Word has length 56 [2021-10-11 02:25:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:44,180 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 321 transitions. [2021-10-11 02:25:44,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 321 transitions. [2021-10-11 02:25:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-11 02:25:44,182 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:44,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 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] [2021-10-11 02:25:44,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-10-11 02:25:44,183 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:44,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1286768169, now seen corresponding path program 1 times [2021-10-11 02:25:44,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:44,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475206857] [2021-10-11 02:25:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:25:44,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475206857] [2021-10-11 02:25:44,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:44,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:25:44,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188444842] [2021-10-11 02:25:44,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:25:44,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:44,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:25:44,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:44,355 INFO L87 Difference]: Start difference. First operand 237 states and 321 transitions. Second operand 7 states. [2021-10-11 02:25:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:44,553 INFO L93 Difference]: Finished difference Result 574 states and 795 transitions. [2021-10-11 02:25:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:25:44,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-10-11 02:25:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:44,556 INFO L225 Difference]: With dead ends: 574 [2021-10-11 02:25:44,556 INFO L226 Difference]: Without dead ends: 375 [2021-10-11 02:25:44,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-11 02:25:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 281. [2021-10-11 02:25:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-10-11 02:25:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 366 transitions. [2021-10-11 02:25:44,567 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 366 transitions. Word has length 58 [2021-10-11 02:25:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:44,568 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 366 transitions. [2021-10-11 02:25:44,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:25:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 366 transitions. [2021-10-11 02:25:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:25:44,569 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:44,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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] [2021-10-11 02:25:44,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-11 02:25:44,570 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:44,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:44,570 INFO L82 PathProgramCache]: Analyzing trace with hash 576447493, now seen corresponding path program 1 times [2021-10-11 02:25:44,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:44,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567570358] [2021-10-11 02:25:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:25:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567570358] [2021-10-11 02:25:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28053723] [2021-10-11 02:25:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:44,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:25:44,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 23 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:25:45,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680515815] [2021-10-11 02:25:45,027 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-10-11 02:25:45,028 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:45,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:45,028 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:45,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:46,164 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:46,369 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-10-11 02:25:46,592 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-10-11 02:25:46,815 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-10-11 02:25:47,063 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-10-11 02:25:47,328 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-10-11 02:25:47,499 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-10-11 02:25:47,680 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-10-11 02:25:47,860 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-10-11 02:25:48,227 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-10-11 02:25:48,729 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-10-11 02:25:49,021 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-10-11 02:25:49,220 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-10-11 02:25:49,819 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-10-11 02:25:50,060 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:50,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:50,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 12 [2021-10-11 02:25:50,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528246949] [2021-10-11 02:25:50,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:25:50,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:25:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-10-11 02:25:50,063 INFO L87 Difference]: Start difference. First operand 281 states and 366 transitions. Second operand 12 states. [2021-10-11 02:25:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:50,935 INFO L93 Difference]: Finished difference Result 671 states and 895 transitions. [2021-10-11 02:25:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:25:50,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2021-10-11 02:25:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:50,939 INFO L225 Difference]: With dead ends: 671 [2021-10-11 02:25:50,939 INFO L226 Difference]: Without dead ends: 428 [2021-10-11 02:25:50,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 148 SyntacticMatches, 23 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2021-10-11 02:25:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-11 02:25:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 352. [2021-10-11 02:25:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2021-10-11 02:25:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 459 transitions. [2021-10-11 02:25:50,954 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 459 transitions. Word has length 60 [2021-10-11 02:25:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:50,955 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 459 transitions. [2021-10-11 02:25:50,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:25:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 459 transitions. [2021-10-11 02:25:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:25:50,956 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:50,957 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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] [2021-10-11 02:25:51,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-11 02:25:51,170 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1299436595, now seen corresponding path program 1 times [2021-10-11 02:25:51,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:51,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219855716] [2021-10-11 02:25:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:25:51,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219855716] [2021-10-11 02:25:51,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500602450] [2021-10-11 02:25:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019557c4-9e7e-4f99-aa01-48d26f8fea90/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:51,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:25:51,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:00,343 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-10-11 02:26:00,344 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2021-10-11 02:26:00,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1654759610] [2021-10-11 02:26:00,347 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-10-11 02:26:00,347 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:00,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:26:00,348 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:26:00,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:26:00,361 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 42 more [2021-10-11 02:26:00,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:00,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-11 02:26:00,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699498258] [2021-10-11 02:26:00,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:00,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:26:00,367 INFO L87 Difference]: Start difference. First operand 352 states and 459 transitions. Second operand 5 states. [2021-10-11 02:26:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:00,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-10-11 02:26:00,590 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@929e82f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:26:00,592 INFO L168 Benchmark]: Toolchain (without parser) took 38421.88 ms. Allocated memory was 96.5 MB in the beginning and 377.5 MB in the end (delta: 281.0 MB). Free memory was 65.0 MB in the beginning and 308.4 MB in the end (delta: -243.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,592 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:00,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.16 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 65.0 MB in the beginning and 108.9 MB in the end (delta: -44.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 134.2 MB. Free memory was 108.9 MB in the beginning and 106.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,593 INFO L168 Benchmark]: Boogie Preprocessor took 29.75 ms. Allocated memory is still 134.2 MB. Free memory was 106.8 MB in the beginning and 105.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,593 INFO L168 Benchmark]: RCFGBuilder took 817.57 ms. Allocated memory is still 134.2 MB. Free memory was 105.2 MB in the beginning and 106.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,594 INFO L168 Benchmark]: TraceAbstraction took 37185.26 ms. Allocated memory was 134.2 MB in the beginning and 377.5 MB in the end (delta: 243.3 MB). Free memory was 105.8 MB in the beginning and 308.4 MB in the end (delta: -202.6 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:00,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.16 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 65.0 MB in the beginning and 108.9 MB in the end (delta: -44.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 134.2 MB. Free memory was 108.9 MB in the beginning and 106.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.75 ms. Allocated memory is still 134.2 MB. Free memory was 106.8 MB in the beginning and 105.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 817.57 ms. Allocated memory is still 134.2 MB. Free memory was 105.2 MB in the beginning and 106.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37185.26 ms. Allocated memory was 134.2 MB in the beginning and 377.5 MB in the end (delta: 243.3 MB). Free memory was 105.8 MB in the beginning and 308.4 MB in the end (delta: -202.6 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@929e82f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@929e82f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...