./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI --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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:40:21,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:40:21,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:40:21,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:40:21,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:40:21,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:40:21,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:40:21,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:40:21,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:40:21,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:40:21,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:40:21,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:40:21,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:40:21,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:40:21,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:40:21,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:40:21,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:40:21,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:40:21,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:40:21,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:40:21,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:40:21,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:40:21,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:40:21,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:40:21,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:40:21,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:40:21,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:40:21,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:40:21,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:40:21,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:40:21,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:40:21,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:40:21,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:40:21,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:40:21,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:40:21,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:40:21,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:40:21,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:40:21,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:40:21,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:40:21,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:40:21,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 03:40:21,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:40:21,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:40:21,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:40:21,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:40:21,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:40:21,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:40:21,648 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:40:21,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:40:21,648 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:40:21,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:40:21,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:40:21,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:40:21,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:40:21,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:40:21,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:40:21,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:40:21,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:40:21,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:40:21,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:40:21,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:40:21,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:40:21,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:40:21,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:40:21,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:40:21,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:21,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:40:21,654 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:40:21,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:40:21,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-11-03 03:40:21,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:40:21,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:40:21,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:40:21,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:40:21,974 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:40:21,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-03 03:40:22,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/data/c71e7ce67/bd1af525a9c4403a821f96f579b30a0a/FLAGf556d6097 [2022-11-03 03:40:22,671 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:40:22,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-03 03:40:22,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/data/c71e7ce67/bd1af525a9c4403a821f96f579b30a0a/FLAGf556d6097 [2022-11-03 03:40:23,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/data/c71e7ce67/bd1af525a9c4403a821f96f579b30a0a [2022-11-03 03:40:23,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:40:23,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:40:23,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:23,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:40:23,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:40:23,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fde2c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23, skipping insertion in model container [2022-11-03 03:40:23,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:40:23,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:40:23,504 WARN L230 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_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-03 03:40:23,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:23,546 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:40:23,603 WARN L230 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_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-03 03:40:23,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:23,665 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:40:23,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23 WrapperNode [2022-11-03 03:40:23,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:23,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:23,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:40:23,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:40:23,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,735 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-03 03:40:23,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:23,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:40:23,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:40:23,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:40:23,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:40:23,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:40:23,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:40:23,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:40:23,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (1/1) ... [2022-11-03 03:40:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:23,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:23,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:40:23,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:40:23,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:40:23,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:40:23,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 03:40:23,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:40:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:40:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-03 03:40:23,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-03 03:40:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:40:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:40:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:40:23,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:40:23,892 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:40:24,058 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:40:24,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:40:24,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:40:24,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:40:24,347 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-03 03:40:24,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:24 BoogieIcfgContainer [2022-11-03 03:40:24,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:40:24,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:40:24,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:40:24,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:40:24,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:23" (1/3) ... [2022-11-03 03:40:24,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed02f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:24, skipping insertion in model container [2022-11-03 03:40:24,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:23" (2/3) ... [2022-11-03 03:40:24,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed02f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:24, skipping insertion in model container [2022-11-03 03:40:24,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:24" (3/3) ... [2022-11-03 03:40:24,360 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-11-03 03:40:24,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:40:24,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:40:24,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 03:40:24,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:40:24,479 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-03 03:40:24,553 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:40:24,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 132 transitions, 272 flow [2022-11-03 03:40:24,581 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 132 transitions, 272 flow [2022-11-03 03:40:24,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2022-11-03 03:40:24,690 INFO L130 PetriNetUnfolder]: 17/169 cut-off events. [2022-11-03 03:40:24,690 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-03 03:40:24,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 17/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 412 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-03 03:40:24,700 INFO L118 LiptonReduction]: Number of co-enabled transitions 3760 [2022-11-03 03:40:29,539 INFO L133 LiptonReduction]: Checked pairs total: 6771 [2022-11-03 03:40:29,539 INFO L135 LiptonReduction]: Total number of compositions: 129 [2022-11-03 03:40:29,548 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 41 transitions, 90 flow [2022-11-03 03:40:29,585 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:29,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:40:29,619 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c07b935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:40:29,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-03 03:40:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:40:29,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:29,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:40:29,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-03 03:40:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 15877642, now seen corresponding path program 1 times [2022-11-03 03:40:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:29,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139402954] [2022-11-03 03:40:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:29,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:29,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139402954] [2022-11-03 03:40:29,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139402954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:29,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:29,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:40:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373335141] [2022-11-03 03:40:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:29,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:29,960 INFO L87 Difference]: Start difference. First operand has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:30,081 INFO L93 Difference]: Finished difference Result 184 states and 333 transitions. [2022-11-03 03:40:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 03:40:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:30,098 INFO L225 Difference]: With dead ends: 184 [2022-11-03 03:40:30,098 INFO L226 Difference]: Without dead ends: 178 [2022-11-03 03:40:30,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:30,104 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:30,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-03 03:40:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-03 03:40:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.98159509202454) internal successors, (323), 177 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 323 transitions. [2022-11-03 03:40:30,159 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 323 transitions. Word has length 4 [2022-11-03 03:40:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:30,160 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 323 transitions. [2022-11-03 03:40:30,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 323 transitions. [2022-11-03 03:40:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:40:30,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:30,162 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 03:40:30,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:40:30,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-03 03:40:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1921439893, now seen corresponding path program 1 times [2022-11-03 03:40:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:30,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903835473] [2022-11-03 03:40:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:40:30,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:40:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:40:30,289 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:40:30,290 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:40:30,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-03 03:40:30,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-03 03:40:30,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-03 03:40:30,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-03 03:40:30,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-03 03:40:30,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-03 03:40:30,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-03 03:40:30,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-03 03:40:30,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-03 03:40:30,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-03 03:40:30,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-03 03:40:30,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-03 03:40:30,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-03 03:40:30,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:40:30,309 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 03:40:30,311 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 03:40:30,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 03:40:30,351 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 03:40:30,357 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:40:30,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 174 transitions, 366 flow [2022-11-03 03:40:30,358 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 174 transitions, 366 flow [2022-11-03 03:40:30,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 174 transitions, 366 flow [2022-11-03 03:40:30,430 INFO L130 PetriNetUnfolder]: 31/285 cut-off events. [2022-11-03 03:40:30,430 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 03:40:30,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 31/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 884 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-03 03:40:30,443 INFO L118 LiptonReduction]: Number of co-enabled transitions 12240 [2022-11-03 03:40:35,056 INFO L133 LiptonReduction]: Checked pairs total: 24313 [2022-11-03 03:40:35,056 INFO L135 LiptonReduction]: Total number of compositions: 158 [2022-11-03 03:40:35,059 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 66 transitions, 150 flow [2022-11-03 03:40:35,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:35,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:40:35,220 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c07b935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:40:35,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-03 03:40:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:40:35,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:35,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:40:35,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 03:40:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash 847620138, now seen corresponding path program 1 times [2022-11-03 03:40:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694981171] [2022-11-03 03:40:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:35,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694981171] [2022-11-03 03:40:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694981171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:35,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:40:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134884272] [2022-11-03 03:40:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:35,420 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:35,572 INFO L93 Difference]: Finished difference Result 3945 states and 10756 transitions. [2022-11-03 03:40:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 03:40:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:35,598 INFO L225 Difference]: With dead ends: 3945 [2022-11-03 03:40:35,598 INFO L226 Difference]: Without dead ends: 3919 [2022-11-03 03:40:35,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:35,600 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-11-03 03:40:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-11-03 03:40:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.8385554965480617) internal successors, (10690), 3918 states have internal predecessors, (10690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10690 transitions. [2022-11-03 03:40:35,749 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10690 transitions. Word has length 5 [2022-11-03 03:40:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10690 transitions. [2022-11-03 03:40:35,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10690 transitions. [2022-11-03 03:40:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:40:35,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:35,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:40:35,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 03:40:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1474286067, now seen corresponding path program 1 times [2022-11-03 03:40:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:35,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440790832] [2022-11-03 03:40:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:36,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440790832] [2022-11-03 03:40:36,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440790832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:36,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:36,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:40:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486410047] [2022-11-03 03:40:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:36,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:40:36,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:40:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:36,023 INFO L87 Difference]: Start difference. First operand 3919 states and 10690 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:36,212 INFO L93 Difference]: Finished difference Result 3582 states and 9697 transitions. [2022-11-03 03:40:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:40:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:40:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:36,236 INFO L225 Difference]: With dead ends: 3582 [2022-11-03 03:40:36,236 INFO L226 Difference]: Without dead ends: 3582 [2022-11-03 03:40:36,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:36,237 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:36,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 16 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-11-03 03:40:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3579. [2022-11-03 03:40:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3446 states have (on average 2.812536273940801) internal successors, (9692), 3578 states have internal predecessors, (9692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 9692 transitions. [2022-11-03 03:40:36,354 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 9692 transitions. Word has length 7 [2022-11-03 03:40:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:36,354 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 9692 transitions. [2022-11-03 03:40:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 9692 transitions. [2022-11-03 03:40:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:40:36,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:36,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 03:40:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:40:36,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 03:40:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1363990055, now seen corresponding path program 1 times [2022-11-03 03:40:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:36,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710265047] [2022-11-03 03:40:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:40:36,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:36,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710265047] [2022-11-03 03:40:36,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710265047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:36,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:36,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:40:36,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073170843] [2022-11-03 03:40:36,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:36,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:36,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:36,392 INFO L87 Difference]: Start difference. First operand 3579 states and 9692 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:36,520 INFO L93 Difference]: Finished difference Result 3347 states and 9028 transitions. [2022-11-03 03:40:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:40:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:36,567 INFO L225 Difference]: With dead ends: 3347 [2022-11-03 03:40:36,567 INFO L226 Difference]: Without dead ends: 3347 [2022-11-03 03:40:36,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:36,569 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-11-03 03:40:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2022-11-03 03:40:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3235 states have (on average 2.790726429675425) internal successors, (9028), 3346 states have internal predecessors, (9028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 9028 transitions. [2022-11-03 03:40:36,671 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 9028 transitions. Word has length 9 [2022-11-03 03:40:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:36,672 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 9028 transitions. [2022-11-03 03:40:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 9028 transitions. [2022-11-03 03:40:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:40:36,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:36,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 03:40:36,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:40:36,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 03:40:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1363990054, now seen corresponding path program 1 times [2022-11-03 03:40:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:36,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876210716] [2022-11-03 03:40:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:36,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876210716] [2022-11-03 03:40:36,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876210716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:40:36,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414605208] [2022-11-03 03:40:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:36,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:36,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:40:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:36,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:40:36,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:36,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:40:36,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414605208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:36,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:40:36,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 03:40:36,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579206274] [2022-11-03 03:40:36,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:36,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:40:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:40:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:36,910 INFO L87 Difference]: Start difference. First operand 3347 states and 9028 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:37,009 INFO L93 Difference]: Finished difference Result 3115 states and 8364 transitions. [2022-11-03 03:40:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:40:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:40:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:37,025 INFO L225 Difference]: With dead ends: 3115 [2022-11-03 03:40:37,026 INFO L226 Difference]: Without dead ends: 3115 [2022-11-03 03:40:37,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:37,027 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 89 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:37,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 9 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2022-11-03 03:40:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3115. [2022-11-03 03:40:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3024 states have (on average 2.765873015873016) internal successors, (8364), 3114 states have internal predecessors, (8364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 8364 transitions. [2022-11-03 03:40:37,177 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 8364 transitions. Word has length 9 [2022-11-03 03:40:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:37,177 INFO L495 AbstractCegarLoop]: Abstraction has 3115 states and 8364 transitions. [2022-11-03 03:40:37,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 8364 transitions. [2022-11-03 03:40:37,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:40:37,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:37,180 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-03 03:40:37,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:37,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 03:40:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -829331285, now seen corresponding path program 1 times [2022-11-03 03:40:37,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79781365] [2022-11-03 03:40:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:40:37,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:40:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:40:37,434 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:40:37,434 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:40:37,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-03 03:40:37,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-03 03:40:37,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-03 03:40:37,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-03 03:40:37,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-03 03:40:37,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-03 03:40:37,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-03 03:40:37,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-03 03:40:37,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-03 03:40:37,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-03 03:40:37,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-03 03:40:37,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-03 03:40:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:40:37,439 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-03 03:40:37,439 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 03:40:37,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 03:40:37,482 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 03:40:37,496 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:40:37,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 216 transitions, 462 flow [2022-11-03 03:40:37,497 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 216 transitions, 462 flow [2022-11-03 03:40:37,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2022-11-03 03:40:37,604 INFO L130 PetriNetUnfolder]: 50/442 cut-off events. [2022-11-03 03:40:37,604 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-03 03:40:37,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 442 events. 50/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1541 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2022-11-03 03:40:37,632 INFO L118 LiptonReduction]: Number of co-enabled transitions 23520 [2022-11-03 03:40:43,058 INFO L133 LiptonReduction]: Checked pairs total: 49963 [2022-11-03 03:40:43,059 INFO L135 LiptonReduction]: Total number of compositions: 196 [2022-11-03 03:40:43,060 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-11-03 03:40:45,909 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:45,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:40:45,911 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c07b935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:40:45,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-03 03:40:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:40:46,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:46,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:40:46,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:40:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1281965755, now seen corresponding path program 1 times [2022-11-03 03:40:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:46,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204187947] [2022-11-03 03:40:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:46,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:46,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204187947] [2022-11-03 03:40:46,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204187947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:46,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:46,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:40:46,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700307157] [2022-11-03 03:40:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:46,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:46,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:46,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:46,298 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:47,566 INFO L93 Difference]: Finished difference Result 65753 states and 238574 transitions. [2022-11-03 03:40:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:47,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 03:40:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:48,390 INFO L225 Difference]: With dead ends: 65753 [2022-11-03 03:40:48,390 INFO L226 Difference]: Without dead ends: 65627 [2022-11-03 03:40:48,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:48,391 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:48,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-11-03 03:40:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-11-03 03:40:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.681486519910957) internal successors, (238148), 65626 states have internal predecessors, (238148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 238148 transitions. [2022-11-03 03:40:52,184 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 238148 transitions. Word has length 5 [2022-11-03 03:40:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:52,188 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 238148 transitions. [2022-11-03 03:40:52,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 238148 transitions. [2022-11-03 03:40:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:40:52,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:52,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:40:52,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:40:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash -678004944, now seen corresponding path program 1 times [2022-11-03 03:40:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:52,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921284809] [2022-11-03 03:40:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:52,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:52,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921284809] [2022-11-03 03:40:52,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921284809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:52,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:52,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:40:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429187868] [2022-11-03 03:40:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:40:52,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:40:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:52,303 INFO L87 Difference]: Start difference. First operand 65627 states and 238148 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:53,268 INFO L93 Difference]: Finished difference Result 62409 states and 225605 transitions. [2022-11-03 03:40:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:40:53,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:40:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:54,110 INFO L225 Difference]: With dead ends: 62409 [2022-11-03 03:40:54,111 INFO L226 Difference]: Without dead ends: 62409 [2022-11-03 03:40:54,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:54,112 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 57 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:54,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 21 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62409 states. [2022-11-03 03:40:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62409 to 62403. [2022-11-03 03:40:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62403 states, 61512 states have (on average 3.6674470022109507) internal successors, (225592), 62402 states have internal predecessors, (225592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62403 states to 62403 states and 225592 transitions. [2022-11-03 03:40:56,372 INFO L78 Accepts]: Start accepts. Automaton has 62403 states and 225592 transitions. Word has length 7 [2022-11-03 03:40:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:56,372 INFO L495 AbstractCegarLoop]: Abstraction has 62403 states and 225592 transitions. [2022-11-03 03:40:56,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 62403 states and 225592 transitions. [2022-11-03 03:40:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:40:56,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:56,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 03:40:56,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:40:56,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:40:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1763833130, now seen corresponding path program 1 times [2022-11-03 03:40:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:56,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259199878] [2022-11-03 03:40:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:40:56,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:56,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259199878] [2022-11-03 03:40:56,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259199878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:56,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:56,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:40:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208813865] [2022-11-03 03:40:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:56,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:56,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:56,894 INFO L87 Difference]: Start difference. First operand 62403 states and 225592 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:57,547 INFO L93 Difference]: Finished difference Result 58293 states and 210184 transitions. [2022-11-03 03:40:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:40:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:57,897 INFO L225 Difference]: With dead ends: 58293 [2022-11-03 03:40:57,898 INFO L226 Difference]: Without dead ends: 58293 [2022-11-03 03:40:57,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:57,899 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:57,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 18 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:40:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58293 states. [2022-11-03 03:41:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58293 to 58293. [2022-11-03 03:41:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58293 states, 57540 states have (on average 3.6528328119568996) internal successors, (210184), 58292 states have internal predecessors, (210184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58293 states to 58293 states and 210184 transitions. [2022-11-03 03:41:00,457 INFO L78 Accepts]: Start accepts. Automaton has 58293 states and 210184 transitions. Word has length 9 [2022-11-03 03:41:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:00,457 INFO L495 AbstractCegarLoop]: Abstraction has 58293 states and 210184 transitions. [2022-11-03 03:41:00,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 58293 states and 210184 transitions. [2022-11-03 03:41:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:41:00,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:00,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 03:41:00,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:41:00,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:41:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1763833182, now seen corresponding path program 1 times [2022-11-03 03:41:00,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:00,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326865703] [2022-11-03 03:41:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:00,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:00,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326865703] [2022-11-03 03:41:00,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326865703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:00,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001790821] [2022-11-03 03:41:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:00,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:00,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:00,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:41:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:00,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:41:00,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:00,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:41:00,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001790821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:00,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:41:00,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 03:41:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669892922] [2022-11-03 03:41:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:00,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:00,647 INFO L87 Difference]: Start difference. First operand 58293 states and 210184 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:01,238 INFO L93 Difference]: Finished difference Result 54183 states and 194776 transitions. [2022-11-03 03:41:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:41:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:02,149 INFO L225 Difference]: With dead ends: 54183 [2022-11-03 03:41:02,149 INFO L226 Difference]: Without dead ends: 54183 [2022-11-03 03:41:02,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:02,161 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:02,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 16 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:41:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54183 states. [2022-11-03 03:41:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54183 to 54183. [2022-11-03 03:41:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54183 states, 53568 states have (on average 3.6360513739546) internal successors, (194776), 54182 states have internal predecessors, (194776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54183 states to 54183 states and 194776 transitions. [2022-11-03 03:41:03,927 INFO L78 Accepts]: Start accepts. Automaton has 54183 states and 194776 transitions. Word has length 9 [2022-11-03 03:41:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:03,927 INFO L495 AbstractCegarLoop]: Abstraction has 54183 states and 194776 transitions. [2022-11-03 03:41:03,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 54183 states and 194776 transitions. [2022-11-03 03:41:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:41:03,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:03,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:03,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:41:04,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:04,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:41:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1369435182, now seen corresponding path program 1 times [2022-11-03 03:41:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:04,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305277666] [2022-11-03 03:41:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:04,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:04,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:04,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305277666] [2022-11-03 03:41:04,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305277666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:04,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:04,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028444376] [2022-11-03 03:41:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:04,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:41:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:41:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:41:04,297 INFO L87 Difference]: Start difference. First operand 54183 states and 194776 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:05,872 INFO L93 Difference]: Finished difference Result 81565 states and 281237 transitions. [2022-11-03 03:41:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:41:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 03:41:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:06,218 INFO L225 Difference]: With dead ends: 81565 [2022-11-03 03:41:06,218 INFO L226 Difference]: Without dead ends: 81565 [2022-11-03 03:41:06,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:41:06,219 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 169 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:06,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 92 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:41:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81565 states. [2022-11-03 03:41:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81565 to 75829. [2022-11-03 03:41:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75829 states, 75214 states have (on average 3.584119977663733) internal successors, (269576), 75828 states have internal predecessors, (269576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75829 states to 75829 states and 269576 transitions. [2022-11-03 03:41:09,390 INFO L78 Accepts]: Start accepts. Automaton has 75829 states and 269576 transitions. Word has length 11 [2022-11-03 03:41:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:09,391 INFO L495 AbstractCegarLoop]: Abstraction has 75829 states and 269576 transitions. [2022-11-03 03:41:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 75829 states and 269576 transitions. [2022-11-03 03:41:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:41:09,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:09,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:41:09,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:41:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1369435205, now seen corresponding path program 1 times [2022-11-03 03:41:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:09,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867688476] [2022-11-03 03:41:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:09,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:09,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867688476] [2022-11-03 03:41:09,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867688476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:09,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:09,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:41:09,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212716614] [2022-11-03 03:41:09,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:09,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:09,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:09,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:09,529 INFO L87 Difference]: Start difference. First operand 75829 states and 269576 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:10,456 INFO L93 Difference]: Finished difference Result 101598 states and 347578 transitions. [2022-11-03 03:41:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:41:10,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 03:41:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:10,874 INFO L225 Difference]: With dead ends: 101598 [2022-11-03 03:41:10,874 INFO L226 Difference]: Without dead ends: 101529 [2022-11-03 03:41:10,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:10,875 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:10,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 53 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:41:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101529 states. [2022-11-03 03:41:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101529 to 88803. [2022-11-03 03:41:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88803 states, 88226 states have (on average 3.531226622537574) internal successors, (311546), 88802 states have internal predecessors, (311546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88803 states to 88803 states and 311546 transitions. [2022-11-03 03:41:14,171 INFO L78 Accepts]: Start accepts. Automaton has 88803 states and 311546 transitions. Word has length 11 [2022-11-03 03:41:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:14,171 INFO L495 AbstractCegarLoop]: Abstraction has 88803 states and 311546 transitions. [2022-11-03 03:41:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 88803 states and 311546 transitions. [2022-11-03 03:41:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:41:14,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:14,172 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:41:14,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:41:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash 397749538, now seen corresponding path program 1 times [2022-11-03 03:41:14,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574279506] [2022-11-03 03:41:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:14,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574279506] [2022-11-03 03:41:14,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574279506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:14,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023710525] [2022-11-03 03:41:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:14,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:14,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:14,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:14,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:41:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:14,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:41:14,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:14,647 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:41:14,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:41:14,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:41:14,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-03 03:41:14,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:41:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:14,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:41:14,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023710525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:14,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:41:14,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-11-03 03:41:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119211301] [2022-11-03 03:41:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:41:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:41:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:41:14,899 INFO L87 Difference]: Start difference. First operand 88803 states and 311546 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:16,619 INFO L93 Difference]: Finished difference Result 87228 states and 305795 transitions. [2022-11-03 03:41:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:41:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:16,989 INFO L225 Difference]: With dead ends: 87228 [2022-11-03 03:41:16,989 INFO L226 Difference]: Without dead ends: 87228 [2022-11-03 03:41:16,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:41:16,990 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:16,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 73 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:41:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87228 states. [2022-11-03 03:41:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87228 to 86013. [2022-11-03 03:41:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86013 states, 85457 states have (on average 3.530547526826357) internal successors, (301710), 86012 states have internal predecessors, (301710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86013 states to 86013 states and 301710 transitions. [2022-11-03 03:41:20,573 INFO L78 Accepts]: Start accepts. Automaton has 86013 states and 301710 transitions. Word has length 14 [2022-11-03 03:41:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:20,574 INFO L495 AbstractCegarLoop]: Abstraction has 86013 states and 301710 transitions. [2022-11-03 03:41:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 86013 states and 301710 transitions. [2022-11-03 03:41:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:41:20,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:20,575 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:20,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 03:41:20,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:20,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-03 03:41:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 397749515, now seen corresponding path program 1 times [2022-11-03 03:41:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:20,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478946275] [2022-11-03 03:41:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:21,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478946275] [2022-11-03 03:41:21,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478946275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576272548] [2022-11-03 03:41:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:21,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:21,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:21,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3748b7f8-ad8f-41fd-9013-f2f4d8a80924/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:41:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:21,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:41:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:21,164 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:41:21,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:41:21,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:41:21,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:41:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:41:21,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:41:21,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576272548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:21,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:41:21,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-11-03 03:41:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249782144] [2022-11-03 03:41:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:21,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:41:21,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:41:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:41:21,288 INFO L87 Difference]: Start difference. First operand 86013 states and 301710 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:41:22,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:22,889 INFO L93 Difference]: Finished difference Result 92860 states and 319225 transitions. [2022-11-03 03:41:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:41:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:41:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:23,348 INFO L225 Difference]: With dead ends: 92860 [2022-11-03 03:41:23,348 INFO L226 Difference]: Without dead ends: 92860 [2022-11-03 03:41:23,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:41:23,349 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 283 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:23,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 50 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:41:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92860 states.