./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh --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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- 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-2329fc7 [2022-12-14 13:16:20,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:16:20,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:16:20,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:16:20,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:16:20,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:16:20,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:16:20,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:16:20,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:16:20,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:16:20,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:16:20,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:16:20,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:16:20,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:16:20,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:16:20,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:16:20,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:16:20,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:16:20,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:16:20,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:16:20,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:16:20,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:16:20,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:16:20,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:16:20,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:16:20,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:16:20,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:16:20,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:16:20,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:16:20,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:16:20,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:16:20,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:16:20,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:16:20,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:16:20,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:16:20,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:16:20,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:16:20,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:16:20,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:16:20,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:16:20,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:16:20,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 13:16:20,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:16:20,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:16:20,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:16:20,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:16:20,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:16:20,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:16:20,642 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:16:20,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:16:20,648 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:16:20,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:16:20,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:16:20,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:16:20,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:16:20,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:16:20,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:16:20,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:16:20,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:16:20,649 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:16:20,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:16:20,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:16:20,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:16:20,651 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:16:20,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:16:20,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:16:20,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:16:20,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:16:20,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:16:20,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:16:20,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:16:20,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:16:20,653 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:16:20,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:16:20,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:16:20,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:16:20,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:16:20,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:16:20,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:16:20,654 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_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2022-12-14 13:16:20,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:16:20,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:16:20,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:16:20,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:16:20,882 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:16:20,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-12-14 13:16:23,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:16:23,624 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:16:23,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-12-14 13:16:23,634 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/data/f1e0f8d87/2eed23386a144e3caca9cb4ec399fc2a/FLAG30c7ad144 [2022-12-14 13:16:24,004 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/data/f1e0f8d87/2eed23386a144e3caca9cb4ec399fc2a [2022-12-14 13:16:24,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:16:24,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:16:24,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:16:24,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:16:24,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:16:24,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24, skipping insertion in model container [2022-12-14 13:16:24,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:16:24,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:16:24,447 WARN L237 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_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-12-14 13:16:24,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:16:24,477 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:16:24,500 WARN L237 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_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-12-14 13:16:24,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:16:24,546 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:16:24,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24 WrapperNode [2022-12-14 13:16:24,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:16:24,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:16:24,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:16:24,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:16:24,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,582 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 266 [2022-12-14 13:16:24,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:16:24,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:16:24,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:16:24,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:16:24,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:16:24,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:16:24,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:16:24,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:16:24,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (1/1) ... [2022-12-14 13:16:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:16:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:24,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:16:24,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:16:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 13:16:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:16:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:16:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:16:24,655 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 13:16:24,754 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:16:24,756 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:16:25,030 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:16:25,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:16:25,040 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-12-14 13:16:25,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:25 BoogieIcfgContainer [2022-12-14 13:16:25,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:16:25,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:16:25,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:16:25,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:16:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:16:24" (1/3) ... [2022-12-14 13:16:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:25, skipping insertion in model container [2022-12-14 13:16:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:24" (2/3) ... [2022-12-14 13:16:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:25, skipping insertion in model container [2022-12-14 13:16:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:25" (3/3) ... [2022-12-14 13:16:25,050 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2022-12-14 13:16:25,057 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 13:16:25,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:16:25,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-12-14 13:16:25,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 13:16:25,154 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 13:16:25,195 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:16:25,208 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 293 transitions, 594 flow [2022-12-14 13:16:25,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 293 transitions, 594 flow [2022-12-14 13:16:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 293 transitions, 594 flow [2022-12-14 13:16:25,324 INFO L130 PetriNetUnfolder]: 73/447 cut-off events. [2022-12-14 13:16:25,324 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 13:16:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 447 events. 73/447 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2127 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 245. Up to 8 conditions per place. [2022-12-14 13:16:25,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 26896 [2022-12-14 13:16:28,650 INFO L134 LiptonReduction]: Checked pairs total: 45449 [2022-12-14 13:16:28,651 INFO L136 LiptonReduction]: Total number of compositions: 273 [2022-12-14 13:16:28,656 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 120 transitions, 248 flow [2022-12-14 13:16:28,707 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1328 states, 1209 states have (on average 3.1141439205955335) internal successors, (3765), 1327 states have internal predecessors, (3765), 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) [2022-12-14 13:16:28,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:16:28,724 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;@7f17d36f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:16:28,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-14 13:16:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 1209 states have (on average 3.1141439205955335) internal successors, (3765), 1327 states have internal predecessors, (3765), 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) [2022-12-14 13:16:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 13:16:28,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:28,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 13:16:28,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:28,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 36785, now seen corresponding path program 1 times [2022-12-14 13:16:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:28,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658896610] [2022-12-14 13:16:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:28,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658896610] [2022-12-14 13:16:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658896610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:28,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:16:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313154165] [2022-12-14 13:16:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:28,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:16:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:16:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:16:28,872 INFO L87 Difference]: Start difference. First operand has 1328 states, 1209 states have (on average 3.1141439205955335) internal successors, (3765), 1327 states have internal predecessors, (3765), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:28,995 INFO L93 Difference]: Finished difference Result 1327 states and 2708 transitions. [2022-12-14 13:16:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:16:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 13:16:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:29,010 INFO L225 Difference]: With dead ends: 1327 [2022-12-14 13:16:29,010 INFO L226 Difference]: Without dead ends: 1317 [2022-12-14 13:16:29,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:16:29,013 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:29,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-12-14 13:16:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2022-12-14 13:16:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1201 states have (on average 2.2439633638634473) internal successors, (2695), 1316 states have internal predecessors, (2695), 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) [2022-12-14 13:16:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2695 transitions. [2022-12-14 13:16:29,080 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2695 transitions. Word has length 2 [2022-12-14 13:16:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:29,080 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2695 transitions. [2022-12-14 13:16:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2695 transitions. [2022-12-14 13:16:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 13:16:29,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:29,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 13:16:29,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:16:29,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 36758, now seen corresponding path program 1 times [2022-12-14 13:16:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939758204] [2022-12-14 13:16:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939758204] [2022-12-14 13:16:29,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939758204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:29,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:29,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:16:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591172837] [2022-12-14 13:16:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:29,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:29,152 INFO L87 Difference]: Start difference. First operand 1317 states and 2695 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:29,250 INFO L93 Difference]: Finished difference Result 1318 states and 2696 transitions. [2022-12-14 13:16:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:29,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 13:16:29,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:29,256 INFO L225 Difference]: With dead ends: 1318 [2022-12-14 13:16:29,256 INFO L226 Difference]: Without dead ends: 1318 [2022-12-14 13:16:29,257 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 [2022-12-14 13:16:29,258 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:29,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-12-14 13:16:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2022-12-14 13:16:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1202 states have (on average 2.2429284525790347) internal successors, (2696), 1317 states have internal predecessors, (2696), 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) [2022-12-14 13:16:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2696 transitions. [2022-12-14 13:16:29,296 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2696 transitions. Word has length 2 [2022-12-14 13:16:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:29,296 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2696 transitions. [2022-12-14 13:16:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2696 transitions. [2022-12-14 13:16:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 13:16:29,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:29,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 13:16:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:16:29,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1142342, now seen corresponding path program 1 times [2022-12-14 13:16:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:29,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151392160] [2022-12-14 13:16:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:29,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151392160] [2022-12-14 13:16:29,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151392160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:29,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108921802] [2022-12-14 13:16:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:29,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:29,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:29,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:16:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:29,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:16:29,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:16:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108921802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:29,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:16:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-14 13:16:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387811193] [2022-12-14 13:16:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:16:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:16:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:16:29,436 INFO L87 Difference]: Start difference. First operand 1318 states and 2696 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 13:16:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:29,530 INFO L93 Difference]: Finished difference Result 1317 states and 2695 transitions. [2022-12-14 13:16:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:16:29,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-12-14 13:16:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:29,534 INFO L225 Difference]: With dead ends: 1317 [2022-12-14 13:16:29,534 INFO L226 Difference]: Without dead ends: 1317 [2022-12-14 13:16:29,534 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 [2022-12-14 13:16:29,535 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:29,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 10 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-12-14 13:16:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2022-12-14 13:16:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1202 states have (on average 2.242096505823627) internal successors, (2695), 1316 states have internal predecessors, (2695), 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) [2022-12-14 13:16:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2695 transitions. [2022-12-14 13:16:29,558 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2695 transitions. Word has length 3 [2022-12-14 13:16:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:29,558 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2695 transitions. [2022-12-14 13:16:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 13:16:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2695 transitions. [2022-12-14 13:16:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:16:29,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:29,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 13:16:29,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:16:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:29,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash -326911846, now seen corresponding path program 1 times [2022-12-14 13:16:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:29,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705795411] [2022-12-14 13:16:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705795411] [2022-12-14 13:16:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705795411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831372400] [2022-12-14 13:16:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:29,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:29,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:29,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:16:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:29,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:16:29,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831372400] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506132280] [2022-12-14 13:16:29,885 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:16:29,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:29,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 13:16:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862319453] [2022-12-14 13:16:29,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:29,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:16:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:16:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:16:29,888 INFO L87 Difference]: Start difference. First operand 1317 states and 2695 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-12-14 13:16:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:29,977 INFO L93 Difference]: Finished difference Result 1320 states and 2698 transitions. [2022-12-14 13:16:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:16:29,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 6 [2022-12-14 13:16:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:29,983 INFO L225 Difference]: With dead ends: 1320 [2022-12-14 13:16:29,983 INFO L226 Difference]: Without dead ends: 1320 [2022-12-14 13:16:29,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:16:29,984 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-12-14 13:16:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-12-14 13:16:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1205 states have (on average 2.2390041493775934) internal successors, (2698), 1319 states have internal predecessors, (2698), 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) [2022-12-14 13:16:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2698 transitions. [2022-12-14 13:16:30,017 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2698 transitions. Word has length 6 [2022-12-14 13:16:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:30,018 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 2698 transitions. [2022-12-14 13:16:30,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-12-14 13:16:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2698 transitions. [2022-12-14 13:16:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:16:30,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:30,018 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-14 13:16:30,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:16:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:30,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -360732342, now seen corresponding path program 2 times [2022-12-14 13:16:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:30,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666705986] [2022-12-14 13:16:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:16:30,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666705986] [2022-12-14 13:16:30,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666705986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:30,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:16:30,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778341323] [2022-12-14 13:16:30,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:30,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:30,405 INFO L87 Difference]: Start difference. First operand 1320 states and 2698 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 13:16:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:30,499 INFO L93 Difference]: Finished difference Result 1235 states and 2559 transitions. [2022-12-14 13:16:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:30,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 [2022-12-14 13:16:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:30,502 INFO L225 Difference]: With dead ends: 1235 [2022-12-14 13:16:30,502 INFO L226 Difference]: Without dead ends: 1235 [2022-12-14 13:16:30,503 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 [2022-12-14 13:16:30,504 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:30,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-12-14 13:16:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2022-12-14 13:16:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1144 states have (on average 2.236888111888112) internal successors, (2559), 1234 states have internal predecessors, (2559), 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) [2022-12-14 13:16:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2559 transitions. [2022-12-14 13:16:30,527 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2559 transitions. Word has length 9 [2022-12-14 13:16:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:30,528 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 2559 transitions. [2022-12-14 13:16:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 13:16:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2559 transitions. [2022-12-14 13:16:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:16:30,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:30,528 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-14 13:16:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:16:30,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1228656937, now seen corresponding path program 1 times [2022-12-14 13:16:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416391931] [2022-12-14 13:16:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:16:30,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:30,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416391931] [2022-12-14 13:16:30,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416391931] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:30,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527132372] [2022-12-14 13:16:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:30,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:16:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:30,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:16:30,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:16:30,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:16:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527132372] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351384010] [2022-12-14 13:16:30,742 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:16:30,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 13:16:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295530227] [2022-12-14 13:16:30,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:30,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 13:16:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 13:16:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:16:30,744 INFO L87 Difference]: Start difference. First operand 1235 states and 2559 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-12-14 13:16:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:30,877 INFO L93 Difference]: Finished difference Result 1241 states and 2565 transitions. [2022-12-14 13:16:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:16:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 [2022-12-14 13:16:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:30,883 INFO L225 Difference]: With dead ends: 1241 [2022-12-14 13:16:30,883 INFO L226 Difference]: Without dead ends: 1241 [2022-12-14 13:16:30,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:16:30,884 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:30,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:30,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-12-14 13:16:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1241. [2022-12-14 13:16:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1150 states have (on average 2.2304347826086954) internal successors, (2565), 1240 states have internal predecessors, (2565), 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) [2022-12-14 13:16:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2565 transitions. [2022-12-14 13:16:30,916 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2565 transitions. Word has length 11 [2022-12-14 13:16:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:30,916 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 2565 transitions. [2022-12-14 13:16:30,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-12-14 13:16:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2565 transitions. [2022-12-14 13:16:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:16:30,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:30,917 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-14 13:16:30,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:16:31,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:16:31,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-14 13:16:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1906511657, now seen corresponding path program 2 times [2022-12-14 13:16:31,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:31,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381089570] [2022-12-14 13:16:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:31,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:31,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:16:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:31,174 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:16:31,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:16:31,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-14 13:16:31,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-12-14 13:16:31,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-12-14 13:16:31,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-12-14 13:16:31,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-12-14 13:16:31,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-12-14 13:16:31,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-12-14 13:16:31,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-12-14 13:16:31,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-12-14 13:16:31,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:16:31,183 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-12-14 13:16:31,185 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 13:16:31,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 13:16:31,214 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 13:16:31,217 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:16:31,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 377 transitions, 772 flow [2022-12-14 13:16:31,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 377 transitions, 772 flow [2022-12-14 13:16:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 377 transitions, 772 flow [2022-12-14 13:16:31,316 INFO L130 PetriNetUnfolder]: 118/722 cut-off events. [2022-12-14 13:16:31,316 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 13:16:31,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 722 events. 118/722 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3901 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 449. Up to 12 conditions per place. [2022-12-14 13:16:31,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 70356 [2022-12-14 13:16:34,976 INFO L134 LiptonReduction]: Checked pairs total: 117723 [2022-12-14 13:16:34,976 INFO L136 LiptonReduction]: Total number of compositions: 337 [2022-12-14 13:16:34,977 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 162 transitions, 342 flow [2022-12-14 13:16:35,738 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35459 states, 34584 states have (on average 4.3806384455239415) internal successors, (151500), 35458 states have internal predecessors, (151500), 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) [2022-12-14 13:16:35,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:16:35,740 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;@7f17d36f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:16:35,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-14 13:16:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 35459 states, 34584 states have (on average 4.3806384455239415) internal successors, (151500), 35458 states have internal predecessors, (151500), 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) [2022-12-14 13:16:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 13:16:35,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:35,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 13:16:35,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash 62275, now seen corresponding path program 1 times [2022-12-14 13:16:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:35,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492355137] [2022-12-14 13:16:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:35,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492355137] [2022-12-14 13:16:35,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492355137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:35,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:35,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:16:35,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797377119] [2022-12-14 13:16:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:35,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:16:35,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:16:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:16:35,835 INFO L87 Difference]: Start difference. First operand has 35459 states, 34584 states have (on average 4.3806384455239415) internal successors, (151500), 35458 states have internal predecessors, (151500), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:36,296 INFO L93 Difference]: Finished difference Result 35458 states and 108787 transitions. [2022-12-14 13:16:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:16:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 13:16:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:36,448 INFO L225 Difference]: With dead ends: 35458 [2022-12-14 13:16:36,448 INFO L226 Difference]: Without dead ends: 35446 [2022-12-14 13:16:36,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:16:36,448 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:36,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35446 states. [2022-12-14 13:16:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35446 to 35446. [2022-12-14 13:16:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35446 states, 34576 states have (on average 3.14579477093938) internal successors, (108769), 35445 states have internal predecessors, (108769), 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) [2022-12-14 13:16:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35446 states to 35446 states and 108769 transitions. [2022-12-14 13:16:37,290 INFO L78 Accepts]: Start accepts. Automaton has 35446 states and 108769 transitions. Word has length 2 [2022-12-14 13:16:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 35446 states and 108769 transitions. [2022-12-14 13:16:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35446 states and 108769 transitions. [2022-12-14 13:16:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 13:16:37,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:37,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 13:16:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:16:37,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 62246, now seen corresponding path program 1 times [2022-12-14 13:16:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632058568] [2022-12-14 13:16:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:37,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:37,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632058568] [2022-12-14 13:16:37,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632058568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:37,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:37,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:16:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98055333] [2022-12-14 13:16:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:37,308 INFO L87 Difference]: Start difference. First operand 35446 states and 108769 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:37,610 INFO L93 Difference]: Finished difference Result 35445 states and 108768 transitions. [2022-12-14 13:16:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:37,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 13:16:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:37,725 INFO L225 Difference]: With dead ends: 35445 [2022-12-14 13:16:37,725 INFO L226 Difference]: Without dead ends: 35445 [2022-12-14 13:16:37,726 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 [2022-12-14 13:16:37,726 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:37,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 15 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35445 states. [2022-12-14 13:16:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35445 to 35445. [2022-12-14 13:16:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 34576 states have (on average 3.1457658491439147) internal successors, (108768), 35444 states have internal predecessors, (108768), 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) [2022-12-14 13:16:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 108768 transitions. [2022-12-14 13:16:38,729 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 108768 transitions. Word has length 2 [2022-12-14 13:16:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 35445 states and 108768 transitions. [2022-12-14 13:16:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:16:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 108768 transitions. [2022-12-14 13:16:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:16:38,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:38,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 13:16:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:16:38,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1715418873, now seen corresponding path program 1 times [2022-12-14 13:16:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:38,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967670828] [2022-12-14 13:16:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:38,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967670828] [2022-12-14 13:16:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967670828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:38,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:38,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:16:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415533144] [2022-12-14 13:16:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:38,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:38,746 INFO L87 Difference]: Start difference. First operand 35445 states and 108768 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 13:16:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:38,999 INFO L93 Difference]: Finished difference Result 35446 states and 108769 transitions. [2022-12-14 13:16:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:39,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-12-14 13:16:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:39,122 INFO L225 Difference]: With dead ends: 35446 [2022-12-14 13:16:39,122 INFO L226 Difference]: Without dead ends: 35446 [2022-12-14 13:16:39,123 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 [2022-12-14 13:16:39,123 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:39,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35446 states. [2022-12-14 13:16:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35446 to 35446. [2022-12-14 13:16:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35446 states, 34577 states have (on average 3.1457037915377275) internal successors, (108769), 35445 states have internal predecessors, (108769), 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) [2022-12-14 13:16:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35446 states to 35446 states and 108769 transitions. [2022-12-14 13:16:39,850 INFO L78 Accepts]: Start accepts. Automaton has 35446 states and 108769 transitions. Word has length 6 [2022-12-14 13:16:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:39,851 INFO L495 AbstractCegarLoop]: Abstraction has 35446 states and 108769 transitions. [2022-12-14 13:16:39,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 13:16:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 35446 states and 108769 transitions. [2022-12-14 13:16:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 13:16:39,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:39,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 13:16:39,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -986330451, now seen corresponding path program 1 times [2022-12-14 13:16:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585046294] [2022-12-14 13:16:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:39,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:39,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585046294] [2022-12-14 13:16:39,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585046294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:39,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659642346] [2022-12-14 13:16:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:39,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:39,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:39,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:16:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:39,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:16:39,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:39,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:39,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659642346] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:39,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263459] [2022-12-14 13:16:39,951 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:16:39,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:39,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 13:16:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602598194] [2022-12-14 13:16:39,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:16:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:16:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:16:39,953 INFO L87 Difference]: Start difference. First operand 35446 states and 108769 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-12-14 13:16:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:40,227 INFO L93 Difference]: Finished difference Result 35449 states and 108772 transitions. [2022-12-14 13:16:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:16:40,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 [2022-12-14 13:16:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:40,343 INFO L225 Difference]: With dead ends: 35449 [2022-12-14 13:16:40,344 INFO L226 Difference]: Without dead ends: 35449 [2022-12-14 13:16:40,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:16:40,344 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:40,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35449 states. [2022-12-14 13:16:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35449 to 35449. [2022-12-14 13:16:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35449 states, 34580 states have (on average 3.145517640254482) internal successors, (108772), 35448 states have internal predecessors, (108772), 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) [2022-12-14 13:16:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35449 states to 35449 states and 108772 transitions. [2022-12-14 13:16:41,071 INFO L78 Accepts]: Start accepts. Automaton has 35449 states and 108772 transitions. Word has length 7 [2022-12-14 13:16:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:41,071 INFO L495 AbstractCegarLoop]: Abstraction has 35449 states and 108772 transitions. [2022-12-14 13:16:41,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-12-14 13:16:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 35449 states and 108772 transitions. [2022-12-14 13:16:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 13:16:41,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:41,071 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:41,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:16:41,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 13:16:41,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1189051399, now seen corresponding path program 2 times [2022-12-14 13:16:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:41,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426439572] [2022-12-14 13:16:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:16:41,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426439572] [2022-12-14 13:16:41,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426439572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:16:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371179855] [2022-12-14 13:16:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:41,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:41,326 INFO L87 Difference]: Start difference. First operand 35449 states and 108772 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-12-14 13:16:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:41,721 INFO L93 Difference]: Finished difference Result 35362 states and 108629 transitions. [2022-12-14 13:16:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:41,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 10 [2022-12-14 13:16:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:41,841 INFO L225 Difference]: With dead ends: 35362 [2022-12-14 13:16:41,841 INFO L226 Difference]: Without dead ends: 35362 [2022-12-14 13:16:41,841 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 [2022-12-14 13:16:41,842 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:41,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 30 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:16:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35362 states. [2022-12-14 13:16:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35362 to 35362. [2022-12-14 13:16:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35362 states, 34517 states have (on average 3.1471159138975) internal successors, (108629), 35361 states have internal predecessors, (108629), 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) [2022-12-14 13:16:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35362 states to 35362 states and 108629 transitions. [2022-12-14 13:16:42,733 INFO L78 Accepts]: Start accepts. Automaton has 35362 states and 108629 transitions. Word has length 10 [2022-12-14 13:16:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 35362 states and 108629 transitions. [2022-12-14 13:16:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-12-14 13:16:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 35362 states and 108629 transitions. [2022-12-14 13:16:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:16:42,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:42,735 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 13:16:42,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1921331630, now seen corresponding path program 1 times [2022-12-14 13:16:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:42,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588424491] [2022-12-14 13:16:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:16:42,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588424491] [2022-12-14 13:16:42,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588424491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:42,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:42,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:16:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299003271] [2022-12-14 13:16:42,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:42,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:42,770 INFO L87 Difference]: Start difference. First operand 35362 states and 108629 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2022-12-14 13:16:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:43,148 INFO L93 Difference]: Finished difference Result 34712 states and 106628 transitions. [2022-12-14 13:16:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 14 [2022-12-14 13:16:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:43,241 INFO L225 Difference]: With dead ends: 34712 [2022-12-14 13:16:43,241 INFO L226 Difference]: Without dead ends: 34712 [2022-12-14 13:16:43,242 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 [2022-12-14 13:16:43,242 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:43,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 15 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34712 states. [2022-12-14 13:16:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34712 to 34712. [2022-12-14 13:16:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34712 states, 33916 states have (on average 3.143884892086331) internal successors, (106628), 34711 states have internal predecessors, (106628), 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) [2022-12-14 13:16:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34712 states to 34712 states and 106628 transitions. [2022-12-14 13:16:43,861 INFO L78 Accepts]: Start accepts. Automaton has 34712 states and 106628 transitions. Word has length 14 [2022-12-14 13:16:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:43,862 INFO L495 AbstractCegarLoop]: Abstraction has 34712 states and 106628 transitions. [2022-12-14 13:16:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2022-12-14 13:16:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34712 states and 106628 transitions. [2022-12-14 13:16:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:16:43,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:43,862 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:43,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 13:16:43,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1921331631, now seen corresponding path program 1 times [2022-12-14 13:16:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:43,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639715489] [2022-12-14 13:16:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:16:43,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:43,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639715489] [2022-12-14 13:16:43,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639715489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:43,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:43,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:16:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993449756] [2022-12-14 13:16:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:16:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:16:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:16:43,889 INFO L87 Difference]: Start difference. First operand 34712 states and 106628 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2022-12-14 13:16:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:44,183 INFO L93 Difference]: Finished difference Result 34062 states and 104627 transitions. [2022-12-14 13:16:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:16:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 14 [2022-12-14 13:16:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:44,297 INFO L225 Difference]: With dead ends: 34062 [2022-12-14 13:16:44,297 INFO L226 Difference]: Without dead ends: 34062 [2022-12-14 13:16:44,297 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 [2022-12-14 13:16:44,298 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:44,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 28 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34062 states. [2022-12-14 13:16:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34062 to 34062. [2022-12-14 13:16:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34062 states, 33315 states have (on average 3.140537295512532) internal successors, (104627), 34061 states have internal predecessors, (104627), 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) [2022-12-14 13:16:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34062 states to 34062 states and 104627 transitions. [2022-12-14 13:16:45,156 INFO L78 Accepts]: Start accepts. Automaton has 34062 states and 104627 transitions. Word has length 14 [2022-12-14 13:16:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:45,156 INFO L495 AbstractCegarLoop]: Abstraction has 34062 states and 104627 transitions. [2022-12-14 13:16:45,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2022-12-14 13:16:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 34062 states and 104627 transitions. [2022-12-14 13:16:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:16:45,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:45,157 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:45,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 13:16:45,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1443754546, now seen corresponding path program 1 times [2022-12-14 13:16:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:45,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662190977] [2022-12-14 13:16:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:45,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662190977] [2022-12-14 13:16:45,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662190977] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562844509] [2022-12-14 13:16:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:45,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:45,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:45,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:16:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:45,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:16:45,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:45,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562844509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104043858] [2022-12-14 13:16:45,341 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:16:45,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:45,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 13:16:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074247423] [2022-12-14 13:16:45,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:45,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:16:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:16:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:16:45,343 INFO L87 Difference]: Start difference. First operand 34062 states and 104627 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-12-14 13:16:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:45,727 INFO L93 Difference]: Finished difference Result 34068 states and 104633 transitions. [2022-12-14 13:16:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:16:45,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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 [2022-12-14 13:16:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:45,840 INFO L225 Difference]: With dead ends: 34068 [2022-12-14 13:16:45,840 INFO L226 Difference]: Without dead ends: 34068 [2022-12-14 13:16:45,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:16:45,841 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:45,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:16:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34068 states. [2022-12-14 13:16:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34068 to 34068. [2022-12-14 13:16:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34068 states, 33321 states have (on average 3.140151856186789) internal successors, (104633), 34067 states have internal predecessors, (104633), 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) [2022-12-14 13:16:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34068 states to 34068 states and 104633 transitions. [2022-12-14 13:16:46,696 INFO L78 Accepts]: Start accepts. Automaton has 34068 states and 104633 transitions. Word has length 14 [2022-12-14 13:16:46,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:46,696 INFO L495 AbstractCegarLoop]: Abstraction has 34068 states and 104633 transitions. [2022-12-14 13:16:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-12-14 13:16:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 34068 states and 104633 transitions. [2022-12-14 13:16:46,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 13:16:46,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:46,697 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:46,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:16:46,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 13:16:46,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1482230350, now seen corresponding path program 2 times [2022-12-14 13:16:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:46,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639733625] [2022-12-14 13:16:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 13:16:47,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639733625] [2022-12-14 13:16:47,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639733625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:47,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:47,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:16:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056103299] [2022-12-14 13:16:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:47,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:16:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:16:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:16:47,152 INFO L87 Difference]: Start difference. First operand 34068 states and 104633 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) [2022-12-14 13:16:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:48,123 INFO L93 Difference]: Finished difference Result 63595 states and 195853 transitions. [2022-12-14 13:16:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:16:48,124 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 20 [2022-12-14 13:16:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:48,358 INFO L225 Difference]: With dead ends: 63595 [2022-12-14 13:16:48,359 INFO L226 Difference]: Without dead ends: 63595 [2022-12-14 13:16:48,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:16:48,359 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 391 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:48,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 122 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:16:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63595 states. [2022-12-14 13:16:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63595 to 43766. [2022-12-14 13:16:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43766 states, 43019 states have (on average 3.192031427973686) internal successors, (137318), 43765 states have internal predecessors, (137318), 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) [2022-12-14 13:16:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43766 states to 43766 states and 137318 transitions. [2022-12-14 13:16:49,849 INFO L78 Accepts]: Start accepts. Automaton has 43766 states and 137318 transitions. Word has length 20 [2022-12-14 13:16:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:49,850 INFO L495 AbstractCegarLoop]: Abstraction has 43766 states and 137318 transitions. [2022-12-14 13:16:49,850 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) [2022-12-14 13:16:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 43766 states and 137318 transitions. [2022-12-14 13:16:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 13:16:49,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:49,851 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 13:16:49,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:49,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -625341884, now seen corresponding path program 1 times [2022-12-14 13:16:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:49,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928932075] [2022-12-14 13:16:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 13:16:49,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:16:49,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928932075] [2022-12-14 13:16:49,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928932075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:16:49,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54662806] [2022-12-14 13:16:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:49,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:49,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:49,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:49,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:16:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:49,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:16:49,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 13:16:49,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 13:16:49,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54662806] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906786433] [2022-12-14 13:16:49,990 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 13:16:49,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:49,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 13:16:49,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117074754] [2022-12-14 13:16:49,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:49,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:16:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:16:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:16:49,992 INFO L87 Difference]: Start difference. First operand 43766 states and 137318 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-12-14 13:16:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:50,141 INFO L93 Difference]: Finished difference Result 4993 states and 14540 transitions. [2022-12-14 13:16:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:16:50,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 22 [2022-12-14 13:16:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:50,149 INFO L225 Difference]: With dead ends: 4993 [2022-12-14 13:16:50,149 INFO L226 Difference]: Without dead ends: 4993 [2022-12-14 13:16:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:16:50,149 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 162 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 29 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:16:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-12-14 13:16:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4513. [2022-12-14 13:16:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4464 states have (on average 2.9702060931899643) internal successors, (13259), 4512 states have internal predecessors, (13259), 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) [2022-12-14 13:16:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 13259 transitions. [2022-12-14 13:16:50,209 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 13259 transitions. Word has length 22 [2022-12-14 13:16:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:50,209 INFO L495 AbstractCegarLoop]: Abstraction has 4513 states and 13259 transitions. [2022-12-14 13:16:50,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-12-14 13:16:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 13259 transitions. [2022-12-14 13:16:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 13:16:50,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:50,210 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 13:16:50,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:16:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb0c3a-9705-4c64-9c87-7c3454b9947b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 13:16:50,412 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-14 13:16:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash 895951768, now seen corresponding path program 1 times [2022-12-14 13:16:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209640979] [2022-12-14 13:16:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:50,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:16:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:50,445 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:16:50,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:16:50,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2022-12-14 13:16:50,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2022-12-14 13:16:50,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2022-12-14 13:16:50,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2022-12-14 13:16:50,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2022-12-14 13:16:50,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2022-12-14 13:16:50,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2022-12-14 13:16:50,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2022-12-14 13:16:50,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 13:16:50,449 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:50,450 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 13:16:50,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 13:16:50,481 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 13:16:50,484 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:16:50,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 461 transitions, 952 flow [2022-12-14 13:16:50,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 461 transitions, 952 flow [2022-12-14 13:16:50,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 461 transitions, 952 flow [2022-12-14 13:16:50,624 INFO L130 PetriNetUnfolder]: 168/1038 cut-off events. [2022-12-14 13:16:50,625 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 13:16:50,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 1038 events. 168/1038 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5970 event pairs, 1 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 730. Up to 16 conditions per place. [2022-12-14 13:16:50,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 126444 [2022-12-14 13:16:54,922 INFO L134 LiptonReduction]: Checked pairs total: 212743 [2022-12-14 13:16:54,922 INFO L136 LiptonReduction]: Total number of compositions: 403 [2022-12-14 13:16:54,923 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 143 places, 202 transitions, 434 flow [2022-12-14 13:17:15,924 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 907162 states, 900827 states have (on average 5.774962340160763) internal successors, (5202242), 907161 states have internal predecessors, (5202242), 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) [2022-12-14 13:17:15,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:17:15,925 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;@7f17d36f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:17:15,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-14 13:17:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 907162 states, 900827 states have (on average 5.774962340160763) internal successors, (5202242), 907161 states have internal predecessors, (5202242), 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) [2022-12-14 13:17:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 13:17:17,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:17:17,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 13:17:17,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 13:17:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:17:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash 92585, now seen corresponding path program 1 times [2022-12-14 13:17:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:17:17,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888431082] [2022-12-14 13:17:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:17:17,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:17:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:17:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:17,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:17:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888431082] [2022-12-14 13:17:17,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888431082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:17:17,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:17:17,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:17:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881258652] [2022-12-14 13:17:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:17:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:17:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:17:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:17:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:17:19,701 INFO L87 Difference]: Start difference. First operand has 907162 states, 900827 states have (on average 5.774962340160763) internal successors, (5202242), 907161 states have internal predecessors, (5202242), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 13:17:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:17:30,928 INFO L93 Difference]: Finished difference Result 907161 states and 3721660 transitions. [2022-12-14 13:17:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:17:30,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 13:17:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:17:38,400 INFO L225 Difference]: With dead ends: 907161 [2022-12-14 13:17:38,400 INFO L226 Difference]: Without dead ends: 907144 [2022-12-14 13:17:38,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:17:38,401 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:17:38,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:17:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907144 states. [2022-12-14 13:18:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907144 to 907144. [2022-12-14 13:18:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907144 states, 900818 states have (on average 4.13138836035692) internal successors, (3721629), 907143 states have internal predecessors, (3721629), 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)