./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:03:34,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:03:34,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:03:34,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:03:34,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:03:34,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:03:34,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:03:34,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:03:34,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:03:34,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:03:34,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:03:34,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:03:34,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:03:34,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:03:34,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:03:34,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:03:34,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:03:34,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:03:34,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:03:34,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:03:34,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:03:34,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:03:34,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:03:34,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:03:34,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:03:34,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:03:34,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:03:34,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:03:34,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:03:34,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:03:34,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:03:34,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:03:34,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:03:34,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:03:34,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:03:34,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:03:34,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:03:34,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:03:34,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:03:34,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:03:34,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:03:34,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:03:34,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:03:34,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:03:34,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:03:34,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:03:34,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:03:34,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:03:34,577 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:03:34,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:03:34,578 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:03:34,578 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:03:34,578 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:03:34,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:03:34,579 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:03:34,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:03:34,580 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:03:34,580 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:03:34,580 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:03:34,581 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:03:34,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:03:34,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:03:34,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:03:34,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:03:34,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:03:34,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:03:34,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:03:34,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:03:34,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:03:34,586 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:03:34,587 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:03:34,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:03:34,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:03:34,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:03:34,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:03:34,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:03:34,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:34,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:03:34,591 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:03:34,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:03:34,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:03:34,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:03:34,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:03:34,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:03:34,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:03:34,600 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_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-03 02:03:34,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:03:35,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:03:35,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:03:35,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:03:35,020 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:03:35,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-03 02:03:35,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/data/e685ef63f/94629b1486db4d74a4cdb5386ffd8d32/FLAG91553385b [2022-11-03 02:03:35,776 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:03:35,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-03 02:03:35,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/data/e685ef63f/94629b1486db4d74a4cdb5386ffd8d32/FLAG91553385b [2022-11-03 02:03:36,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/data/e685ef63f/94629b1486db4d74a4cdb5386ffd8d32 [2022-11-03 02:03:36,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:03:36,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:03:36,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:36,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:03:36,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:03:36,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151e8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36, skipping insertion in model container [2022-11-03 02:03:36,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:03:36,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:03:36,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-03 02:03:36,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:36,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:03:36,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-03 02:03:36,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:36,776 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:03:36,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36 WrapperNode [2022-11-03 02:03:36,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:36,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:36,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:03:36,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:03:36,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,857 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-03 02:03:36,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:36,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:03:36,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:03:36,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:03:36,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:03:36,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:03:36,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:03:36,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:03:36,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (1/1) ... [2022-11-03 02:03:36,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:36,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:36,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:03:36,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:03:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-03 02:03:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-03 02:03:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:03:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 02:03:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:03:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:03:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:03:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:03:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:03:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:03:36,998 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:03:37,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:03:37,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:03:37,520 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:03:37,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:03:37,529 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:03:37,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:37 BoogieIcfgContainer [2022-11-03 02:03:37,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:03:37,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:03:37,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:03:37,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:03:37,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:03:36" (1/3) ... [2022-11-03 02:03:37,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17054971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:37, skipping insertion in model container [2022-11-03 02:03:37,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:36" (2/3) ... [2022-11-03 02:03:37,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17054971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:37, skipping insertion in model container [2022-11-03 02:03:37,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:37" (3/3) ... [2022-11-03 02:03:37,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-03 02:03:37,552 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:03:37,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:03:37,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-03 02:03:37,565 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:03:37,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 02:03:37,660 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:03:37,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 127 transitions, 259 flow [2022-11-03 02:03:37,680 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 127 transitions, 259 flow [2022-11-03 02:03:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 259 flow [2022-11-03 02:03:37,820 INFO L130 PetriNetUnfolder]: 10/126 cut-off events. [2022-11-03 02:03:37,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 02:03:37,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 231 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-03 02:03:37,831 INFO L118 LiptonReduction]: Number of co-enabled transitions 3900 [2022-11-03 02:03:42,007 INFO L133 LiptonReduction]: Checked pairs total: 6775 [2022-11-03 02:03:42,007 INFO L135 LiptonReduction]: Total number of compositions: 118 [2022-11-03 02:03:42,016 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 32 transitions, 69 flow [2022-11-03 02:03:42,050 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 157 states, 143 states have (on average 2.5244755244755246) internal successors, (361), 156 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:42,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:03:42,097 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;@3c1628fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:03:42,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-03 02:03:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 143 states have (on average 2.5244755244755246) internal successors, (361), 156 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:03:42,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:42,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:03:42,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1826278313, now seen corresponding path program 1 times [2022-11-03 02:03:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710914654] [2022-11-03 02:03:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:42,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:42,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710914654] [2022-11-03 02:03:42,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710914654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:42,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:42,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:03:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286001799] [2022-11-03 02:03:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:42,551 INFO L87 Difference]: Start difference. First operand has 157 states, 143 states have (on average 2.5244755244755246) internal successors, (361), 156 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) 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) [2022-11-03 02:03:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:42,679 INFO L93 Difference]: Finished difference Result 170 states and 368 transitions. [2022-11-03 02:03:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2022-11-03 02:03:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:42,702 INFO L225 Difference]: With dead ends: 170 [2022-11-03 02:03:42,703 INFO L226 Difference]: Without dead ends: 165 [2022-11-03 02:03:42,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:42,711 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:42,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-03 02:03:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2022-11-03 02:03:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 2.34) internal successors, (351), 159 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 351 transitions. [2022-11-03 02:03:42,781 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 351 transitions. Word has length 6 [2022-11-03 02:03:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 351 transitions. [2022-11-03 02:03:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2022-11-03 02:03:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 351 transitions. [2022-11-03 02:03:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:03:42,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:42,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:03:42,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1987525866, now seen corresponding path program 1 times [2022-11-03 02:03:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918465324] [2022-11-03 02:03:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:42,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:42,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:42,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918465324] [2022-11-03 02:03:42,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918465324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:42,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:42,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226093149] [2022-11-03 02:03:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:42,926 INFO L87 Difference]: Start difference. First operand 160 states and 351 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:43,043 INFO L93 Difference]: Finished difference Result 196 states and 427 transitions. [2022-11-03 02:03:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 02:03:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:43,046 INFO L225 Difference]: With dead ends: 196 [2022-11-03 02:03:43,047 INFO L226 Difference]: Without dead ends: 196 [2022-11-03 02:03:43,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:43,049 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:43,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-03 02:03:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-03 02:03:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 186 states have (on average 2.295698924731183) internal successors, (427), 195 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 427 transitions. [2022-11-03 02:03:43,068 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 427 transitions. Word has length 9 [2022-11-03 02:03:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:43,069 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 427 transitions. [2022-11-03 02:03:43,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 427 transitions. [2022-11-03 02:03:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:03:43,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:43,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:43,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:03:43,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash 36542424, now seen corresponding path program 1 times [2022-11-03 02:03:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:43,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316088705] [2022-11-03 02:03:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:03:43,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:43,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316088705] [2022-11-03 02:03:43,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316088705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:43,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:43,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607676514] [2022-11-03 02:03:43,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:43,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:43,226 INFO L87 Difference]: Start difference. First operand 196 states and 427 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) [2022-11-03 02:03:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:43,332 INFO L93 Difference]: Finished difference Result 301 states and 656 transitions. [2022-11-03 02:03:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:43,333 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 12 [2022-11-03 02:03:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:43,340 INFO L225 Difference]: With dead ends: 301 [2022-11-03 02:03:43,340 INFO L226 Difference]: Without dead ends: 301 [2022-11-03 02:03:43,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:43,348 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:43,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-03 02:03:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-11-03 02:03:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 278 states have (on average 2.323741007194245) internal successors, (646), 287 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 646 transitions. [2022-11-03 02:03:43,392 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 646 transitions. Word has length 12 [2022-11-03 02:03:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 646 transitions. [2022-11-03 02:03:43,393 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) [2022-11-03 02:03:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 646 transitions. [2022-11-03 02:03:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:03:43,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:43,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:03:43,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 36542445, now seen corresponding path program 1 times [2022-11-03 02:03:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800782692] [2022-11-03 02:03:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:43,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:43,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800782692] [2022-11-03 02:03:43,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800782692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211948115] [2022-11-03 02:03:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:43,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:43,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:43,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:03:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:43,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:43,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:43,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:43,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211948115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:43,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:03:43,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-11-03 02:03:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827356124] [2022-11-03 02:03:43,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:43,714 INFO L87 Difference]: Start difference. First operand 288 states and 646 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:43,830 INFO L93 Difference]: Finished difference Result 335 states and 736 transitions. [2022-11-03 02:03:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-03 02:03:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:43,834 INFO L225 Difference]: With dead ends: 335 [2022-11-03 02:03:43,834 INFO L226 Difference]: Without dead ends: 335 [2022-11-03 02:03:43,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:03:43,836 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:43,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 6 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-03 02:03:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 306. [2022-11-03 02:03:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 296 states have (on average 2.3277027027027026) internal successors, (689), 305 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 689 transitions. [2022-11-03 02:03:43,855 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 689 transitions. Word has length 12 [2022-11-03 02:03:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:43,856 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 689 transitions. [2022-11-03 02:03:43,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 689 transitions. [2022-11-03 02:03:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:03:43,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:43,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:43,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:44,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:44,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 303990571, now seen corresponding path program 1 times [2022-11-03 02:03:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:44,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138129124] [2022-11-03 02:03:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:44,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:44,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:44,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138129124] [2022-11-03 02:03:44,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138129124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:44,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145053511] [2022-11-03 02:03:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:44,249 INFO L87 Difference]: Start difference. First operand 306 states and 689 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:44,300 INFO L93 Difference]: Finished difference Result 148 states and 307 transitions. [2022-11-03 02:03:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-03 02:03:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:44,303 INFO L225 Difference]: With dead ends: 148 [2022-11-03 02:03:44,303 INFO L226 Difference]: Without dead ends: 138 [2022-11-03 02:03:44,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:44,304 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:44,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:03:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-03 02:03:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2022-11-03 02:03:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 124 states have (on average 2.1048387096774195) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 261 transitions. [2022-11-03 02:03:44,312 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 261 transitions. Word has length 13 [2022-11-03 02:03:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:44,313 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 261 transitions. [2022-11-03 02:03:44,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 261 transitions. [2022-11-03 02:03:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:03:44,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:44,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:03:44,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1132812353, now seen corresponding path program 1 times [2022-11-03 02:03:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891260115] [2022-11-03 02:03:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:44,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:44,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891260115] [2022-11-03 02:03:44,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891260115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249340086] [2022-11-03 02:03:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:44,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:44,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:44,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:03:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:44,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:44,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:44,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:44,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249340086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:44,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893681272] [2022-11-03 02:03:44,650 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:336) 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) [2022-11-03 02:03:44,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:44,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-03 02:03:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057168832] [2022-11-03 02:03:44,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:44,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:03:44,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:03:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:03:44,663 INFO L87 Difference]: Start difference. First operand 131 states and 261 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:44,899 INFO L93 Difference]: Finished difference Result 201 states and 395 transitions. [2022-11-03 02:03:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:03:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 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 13 [2022-11-03 02:03:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:44,903 INFO L225 Difference]: With dead ends: 201 [2022-11-03 02:03:44,903 INFO L226 Difference]: Without dead ends: 196 [2022-11-03 02:03:44,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:03:44,906 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:44,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 17 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:03:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-03 02:03:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2022-11-03 02:03:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 2.0337837837837838) internal successors, (301), 154 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 301 transitions. [2022-11-03 02:03:44,924 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 301 transitions. Word has length 13 [2022-11-03 02:03:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:44,925 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 301 transitions. [2022-11-03 02:03:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 301 transitions. [2022-11-03 02:03:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:03:44,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:44,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:44,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:45,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:45,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -229400319, now seen corresponding path program 1 times [2022-11-03 02:03:45,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:45,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363990968] [2022-11-03 02:03:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:45,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:45,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363990968] [2022-11-03 02:03:45,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363990968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:45,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:45,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:45,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363392629] [2022-11-03 02:03:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:45,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:45,196 INFO L87 Difference]: Start difference. First operand 155 states and 301 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:45,257 INFO L93 Difference]: Finished difference Result 157 states and 292 transitions. [2022-11-03 02:03:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:45,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:03:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:45,259 INFO L225 Difference]: With dead ends: 157 [2022-11-03 02:03:45,259 INFO L226 Difference]: Without dead ends: 157 [2022-11-03 02:03:45,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:45,260 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:45,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-03 02:03:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2022-11-03 02:03:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.9148936170212767) internal successors, (270), 144 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 270 transitions. [2022-11-03 02:03:45,266 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 270 transitions. Word has length 14 [2022-11-03 02:03:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:45,267 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 270 transitions. [2022-11-03 02:03:45,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 270 transitions. [2022-11-03 02:03:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:03:45,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:45,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:03:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:03:45,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2009584775, now seen corresponding path program 1 times [2022-11-03 02:03:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751718487] [2022-11-03 02:03:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:45,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751718487] [2022-11-03 02:03:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751718487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894640147] [2022-11-03 02:03:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:45,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:45,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:45,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:45,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:03:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:45,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:45,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:45,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:45,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894640147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:45,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:03:45,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 02:03:45,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751300839] [2022-11-03 02:03:45,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:45,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:45,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:45,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:45,467 INFO L87 Difference]: Start difference. First operand 145 states and 270 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:45,519 INFO L93 Difference]: Finished difference Result 125 states and 227 transitions. [2022-11-03 02:03:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:03:45,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-03 02:03:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:45,521 INFO L225 Difference]: With dead ends: 125 [2022-11-03 02:03:45,521 INFO L226 Difference]: Without dead ends: 125 [2022-11-03 02:03:45,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:45,522 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:45,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:03:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-03 02:03:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-03 02:03:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 1.860655737704918) internal successors, (227), 124 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2022-11-03 02:03:45,527 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 15 [2022-11-03 02:03:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:45,528 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2022-11-03 02:03:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2022-11-03 02:03:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:03:45,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:45,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:03:45,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:45,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2009584758, now seen corresponding path program 1 times [2022-11-03 02:03:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:45,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654705011] [2022-11-03 02:03:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:45,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654705011] [2022-11-03 02:03:45,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654705011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857255079] [2022-11-03 02:03:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:45,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:45,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:03:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:45,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:45,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:45,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:46,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857255079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:46,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297644489] [2022-11-03 02:03:46,019 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:336) 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) [2022-11-03 02:03:46,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:46,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:03:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269353590] [2022-11-03 02:03:46,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:46,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:03:46,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:46,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:03:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:46,023 INFO L87 Difference]: Start difference. First operand 125 states and 227 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:46,168 INFO L93 Difference]: Finished difference Result 253 states and 438 transitions. [2022-11-03 02:03:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:03:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 15 [2022-11-03 02:03:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:46,170 INFO L225 Difference]: With dead ends: 253 [2022-11-03 02:03:46,170 INFO L226 Difference]: Without dead ends: 247 [2022-11-03 02:03:46,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:46,173 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 93 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 21 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-03 02:03:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 196. [2022-11-03 02:03:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 1.927461139896373) internal successors, (372), 195 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 372 transitions. [2022-11-03 02:03:46,182 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 372 transitions. Word has length 15 [2022-11-03 02:03:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:46,183 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 372 transitions. [2022-11-03 02:03:46,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 372 transitions. [2022-11-03 02:03:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:03:46,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:46,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:46,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:46,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:46,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash -838634901, now seen corresponding path program 1 times [2022-11-03 02:03:46,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:46,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553066823] [2022-11-03 02:03:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:46,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:46,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553066823] [2022-11-03 02:03:46,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553066823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:46,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:46,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:46,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242649246] [2022-11-03 02:03:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:46,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:46,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:46,508 INFO L87 Difference]: Start difference. First operand 196 states and 372 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2022-11-03 02:03:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:46,593 INFO L93 Difference]: Finished difference Result 244 states and 454 transitions. [2022-11-03 02:03:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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 20 [2022-11-03 02:03:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:46,595 INFO L225 Difference]: With dead ends: 244 [2022-11-03 02:03:46,595 INFO L226 Difference]: Without dead ends: 244 [2022-11-03 02:03:46,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:03:46,596 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:46,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 11 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-03 02:03:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 182. [2022-11-03 02:03:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.8944444444444444) internal successors, (341), 181 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 341 transitions. [2022-11-03 02:03:46,603 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 341 transitions. Word has length 20 [2022-11-03 02:03:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:46,604 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 341 transitions. [2022-11-03 02:03:46,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2022-11-03 02:03:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 341 transitions. [2022-11-03 02:03:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:03:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:46,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:03:46,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1127534289, now seen corresponding path program 1 times [2022-11-03 02:03:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361198649] [2022-11-03 02:03:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:46,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361198649] [2022-11-03 02:03:46,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361198649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:46,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:46,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:03:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167357316] [2022-11-03 02:03:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:46,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:03:46,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:03:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:46,696 INFO L87 Difference]: Start difference. First operand 182 states and 341 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:46,828 INFO L93 Difference]: Finished difference Result 286 states and 508 transitions. [2022-11-03 02:03:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:03:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-03 02:03:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:46,832 INFO L225 Difference]: With dead ends: 286 [2022-11-03 02:03:46,832 INFO L226 Difference]: Without dead ends: 263 [2022-11-03 02:03:46,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:03:46,834 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:46,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-03 02:03:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 252. [2022-11-03 02:03:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.724) internal successors, (431), 251 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 431 transitions. [2022-11-03 02:03:46,842 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 431 transitions. Word has length 21 [2022-11-03 02:03:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:46,843 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 431 transitions. [2022-11-03 02:03:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 431 transitions. [2022-11-03 02:03:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:03:46,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:46,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:03:46,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1612945423, now seen corresponding path program 1 times [2022-11-03 02:03:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:46,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224450615] [2022-11-03 02:03:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:46,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224450615] [2022-11-03 02:03:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224450615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810322423] [2022-11-03 02:03:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:46,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:46,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:47,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:03:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:47,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:03:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:47,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:47,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810322423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:47,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1724800691] [2022-11-03 02:03:47,318 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:336) 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) [2022-11-03 02:03:47,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:47,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-03 02:03:47,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986880499] [2022-11-03 02:03:47,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:47,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:03:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:03:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:47,325 INFO L87 Difference]: Start difference. First operand 252 states and 431 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:47,517 INFO L93 Difference]: Finished difference Result 336 states and 577 transitions. [2022-11-03 02:03:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:03:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 26 [2022-11-03 02:03:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:47,519 INFO L225 Difference]: With dead ends: 336 [2022-11-03 02:03:47,520 INFO L226 Difference]: Without dead ends: 336 [2022-11-03 02:03:47,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:03:47,521 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 134 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 24 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-03 02:03:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2022-11-03 02:03:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 294 states have (on average 1.7585034013605443) internal successors, (517), 295 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 517 transitions. [2022-11-03 02:03:47,549 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 517 transitions. Word has length 26 [2022-11-03 02:03:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:47,550 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 517 transitions. [2022-11-03 02:03:47,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 517 transitions. [2022-11-03 02:03:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:03:47,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:47,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:47,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:47,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:03:47,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:47,775 INFO L85 PathProgramCache]: Analyzing trace with hash 434532382, now seen corresponding path program 1 times [2022-11-03 02:03:47,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:47,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271659492] [2022-11-03 02:03:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:47,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:47,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271659492] [2022-11-03 02:03:47,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271659492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:47,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62323504] [2022-11-03 02:03:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:47,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:47,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:47,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:47,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:03:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:48,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:03:48,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:48,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:48,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62323504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:48,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650699261] [2022-11-03 02:03:48,247 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:336) 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) [2022-11-03 02:03:48,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-03 02:03:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101840611] [2022-11-03 02:03:48,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:03:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:03:48,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:03:48,250 INFO L87 Difference]: Start difference. First operand 296 states and 517 transitions. Second operand has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:48,509 INFO L93 Difference]: Finished difference Result 406 states and 708 transitions. [2022-11-03 02:03:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:03:48,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 16 states have internal predecessors, (70), 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 27 [2022-11-03 02:03:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:48,515 INFO L225 Difference]: With dead ends: 406 [2022-11-03 02:03:48,515 INFO L226 Difference]: Without dead ends: 379 [2022-11-03 02:03:48,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:03:48,516 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:48,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 28 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:03:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-03 02:03:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 282. [2022-11-03 02:03:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 282 states have (on average 1.6205673758865249) internal successors, (457), 281 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 457 transitions. [2022-11-03 02:03:48,526 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 457 transitions. Word has length 27 [2022-11-03 02:03:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 457 transitions. [2022-11-03 02:03:48,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 457 transitions. [2022-11-03 02:03:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:03:48,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:48,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-03 02:03:48,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:03:48,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1219161917, now seen corresponding path program 1 times [2022-11-03 02:03:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:48,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93746779] [2022-11-03 02:03:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:48,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93746779] [2022-11-03 02:03:48,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93746779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437371713] [2022-11-03 02:03:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:48,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:48,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:03:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:48,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:03:49,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:49,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:49,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437371713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1966806246] [2022-11-03 02:03:49,399 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:336) 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) [2022-11-03 02:03:49,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:49,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2022-11-03 02:03:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479472833] [2022-11-03 02:03:49,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:49,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:03:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:03:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:03:49,403 INFO L87 Difference]: Start difference. First operand 282 states and 457 transitions. Second operand has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:50,067 INFO L93 Difference]: Finished difference Result 497 states and 805 transitions. [2022-11-03 02:03:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 02:03:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 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 31 [2022-11-03 02:03:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:50,070 INFO L225 Difference]: With dead ends: 497 [2022-11-03 02:03:50,070 INFO L226 Difference]: Without dead ends: 494 [2022-11-03 02:03:50,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:03:50,072 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 405 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:50,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 63 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:03:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-03 02:03:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 397. [2022-11-03 02:03:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 397 states have (on average 1.614609571788413) internal successors, (641), 396 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 641 transitions. [2022-11-03 02:03:50,087 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 641 transitions. Word has length 31 [2022-11-03 02:03:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:50,087 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 641 transitions. [2022-11-03 02:03:50,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 641 transitions. [2022-11-03 02:03:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:03:50,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:50,092 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1] [2022-11-03 02:03:50,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:03:50,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1506164038, now seen corresponding path program 2 times [2022-11-03 02:03:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:50,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007240702] [2022-11-03 02:03:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:50,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:50,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:50,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007240702] [2022-11-03 02:03:50,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007240702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:50,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157078459] [2022-11-03 02:03:50,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:03:50,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:50,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:50,472 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:50,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:03:50,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-03 02:03:50,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:03:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:03:50,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:50,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:50,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157078459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:50,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1520306058] [2022-11-03 02:03:50,842 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:336) 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) [2022-11-03 02:03:50,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:50,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-03 02:03:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534287279] [2022-11-03 02:03:50,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:03:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:03:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:03:50,847 INFO L87 Difference]: Start difference. First operand 397 states and 641 transitions. Second operand has 15 states, 14 states have (on average 5.928571428571429) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:51,125 INFO L93 Difference]: Finished difference Result 873 states and 1373 transitions. [2022-11-03 02:03:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:03:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.928571428571429) internal successors, (83), 15 states have internal predecessors, (83), 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 39 [2022-11-03 02:03:51,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:51,130 INFO L225 Difference]: With dead ends: 873 [2022-11-03 02:03:51,130 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 02:03:51,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:03:51,131 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 249 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:51,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 45 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:03:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 02:03:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 832. [2022-11-03 02:03:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 832 states have (on average 1.5432692307692308) internal successors, (1284), 831 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1284 transitions. [2022-11-03 02:03:51,155 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1284 transitions. Word has length 39 [2022-11-03 02:03:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:51,156 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1284 transitions. [2022-11-03 02:03:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.928571428571429) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1284 transitions. [2022-11-03 02:03:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:03:51,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:51,159 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:51,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:03:51,382 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash 135138067, now seen corresponding path program 1 times [2022-11-03 02:03:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34792741] [2022-11-03 02:03:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:51,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:51,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34792741] [2022-11-03 02:03:51,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34792741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675727073] [2022-11-03 02:03:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:51,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:51,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:51,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:03:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:51,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:03:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 132 proven. 22 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-03 02:03:52,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 132 proven. 22 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-03 02:03:52,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675727073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1537998278] [2022-11-03 02:03:52,374 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:336) 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) [2022-11-03 02:03:52,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:52,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 31 [2022-11-03 02:03:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497565948] [2022-11-03 02:03:52,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 02:03:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 02:03:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:03:52,376 INFO L87 Difference]: Start difference. First operand 832 states and 1284 transitions. Second operand has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:57,611 INFO L93 Difference]: Finished difference Result 1750 states and 2683 transitions. [2022-11-03 02:03:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-11-03 02:03:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 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 69 [2022-11-03 02:03:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:57,619 INFO L225 Difference]: With dead ends: 1750 [2022-11-03 02:03:57,619 INFO L226 Difference]: Without dead ends: 1747 [2022-11-03 02:03:57,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17662 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8107, Invalid=33305, Unknown=0, NotChecked=0, Total=41412 [2022-11-03 02:03:57,635 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1005 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:57,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 126 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:03:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-11-03 02:03:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1016. [2022-11-03 02:03:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1016 states have (on average 1.5187007874015748) internal successors, (1543), 1015 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1543 transitions. [2022-11-03 02:03:57,678 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1543 transitions. Word has length 69 [2022-11-03 02:03:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:57,678 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1543 transitions. [2022-11-03 02:03:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1543 transitions. [2022-11-03 02:03:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:03:57,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:57,682 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:57,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:57,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:03:57,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:03:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -791582328, now seen corresponding path program 2 times [2022-11-03 02:03:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:57,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298153184] [2022-11-03 02:03:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:57,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:58,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298153184] [2022-11-03 02:03:58,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298153184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667081873] [2022-11-03 02:03:58,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:03:58,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:58,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:58,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:58,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:03:58,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 02:03:58,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:03:58,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:03:58,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 26 proven. 192 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-03 02:03:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 26 proven. 192 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-03 02:03:59,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667081873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [484345973] [2022-11-03 02:03:59,229 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:336) 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) [2022-11-03 02:03:59,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 36 [2022-11-03 02:03:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498661374] [2022-11-03 02:03:59,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:03:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:03:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:03:59,232 INFO L87 Difference]: Start difference. First operand 1016 states and 1543 transitions. Second operand has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 36 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:06,046 INFO L93 Difference]: Finished difference Result 2424 states and 3685 transitions. [2022-11-03 02:04:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-11-03 02:04:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 36 states have internal predecessors, (155), 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 77 [2022-11-03 02:04:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:06,055 INFO L225 Difference]: With dead ends: 2424 [2022-11-03 02:04:06,055 INFO L226 Difference]: Without dead ends: 2421 [2022-11-03 02:04:06,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30244 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=12963, Invalid=55419, Unknown=0, NotChecked=0, Total=68382 [2022-11-03 02:04:06,067 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1466 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:06,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 145 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:04:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-11-03 02:04:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1351. [2022-11-03 02:04:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1351 states have (on average 1.5159141376757956) internal successors, (2048), 1350 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 2048 transitions. [2022-11-03 02:04:06,146 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 2048 transitions. Word has length 77 [2022-11-03 02:04:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:06,146 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 2048 transitions. [2022-11-03 02:04:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 36 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 2048 transitions. [2022-11-03 02:04:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:04:06,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:06,150 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 9, 9, 9, 6, 1, 1, 1, 1] [2022-11-03 02:04:06,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:04:06,374 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:04:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1603614223, now seen corresponding path program 2 times [2022-11-03 02:04:06,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345081488] [2022-11-03 02:04:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:06,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:06,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345081488] [2022-11-03 02:04:06,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345081488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:06,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230275773] [2022-11-03 02:04:06,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:04:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:06,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:06,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:06,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:04:07,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-03 02:04:07,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:04:07,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:04:07,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 28 proven. 404 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:04:07,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 28 proven. 404 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:04:08,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230275773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:08,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1580026395] [2022-11-03 02:04:08,120 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:336) 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) [2022-11-03 02:04:08,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:08,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 55 [2022-11-03 02:04:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197404443] [2022-11-03 02:04:08,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-03 02:04:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-03 02:04:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=2415, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:04:08,124 INFO L87 Difference]: Start difference. First operand 1351 states and 2048 transitions. Second operand has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 55 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:10,295 INFO L93 Difference]: Finished difference Result 1766 states and 2680 transitions. [2022-11-03 02:04:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-03 02:04:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 55 states have internal predecessors, (203), 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 81 [2022-11-03 02:04:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:10,307 INFO L225 Difference]: With dead ends: 1766 [2022-11-03 02:04:10,307 INFO L226 Difference]: Without dead ends: 1763 [2022-11-03 02:04:10,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3757 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3196, Invalid=10610, Unknown=0, NotChecked=0, Total=13806 [2022-11-03 02:04:10,309 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1472 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:10,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 147 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:04:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-11-03 02:04:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1564. [2022-11-03 02:04:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1564 states have (on average 1.5089514066496164) internal successors, (2360), 1563 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2360 transitions. [2022-11-03 02:04:10,353 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2360 transitions. Word has length 81 [2022-11-03 02:04:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:10,353 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2360 transitions. [2022-11-03 02:04:10,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 55 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2360 transitions. [2022-11-03 02:04:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:04:10,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:10,356 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 9, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:10,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:10,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:04:10,582 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:04:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash -845345496, now seen corresponding path program 3 times [2022-11-03 02:04:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272779877] [2022-11-03 02:04:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:11,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272779877] [2022-11-03 02:04:11,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272779877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993092205] [2022-11-03 02:04:11,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:04:11,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:11,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:11,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:11,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:04:11,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:04:11,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:04:11,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:04:11,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 230 proven. 212 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 02:04:11,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 230 proven. 212 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 02:04:12,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993092205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642801459] [2022-11-03 02:04:12,006 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:336) 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) [2022-11-03 02:04:12,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:12,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2022-11-03 02:04:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556061028] [2022-11-03 02:04:12,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:12,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 02:04:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 02:04:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1703, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 02:04:12,009 INFO L87 Difference]: Start difference. First operand 1564 states and 2360 transitions. Second operand has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:24,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:24,635 INFO L93 Difference]: Finished difference Result 4205 states and 6373 transitions. [2022-11-03 02:04:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. [2022-11-03 02:04:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 states have internal predecessors, (194), 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 89 [2022-11-03 02:04:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:24,651 INFO L225 Difference]: With dead ends: 4205 [2022-11-03 02:04:24,651 INFO L226 Difference]: Without dead ends: 4202 [2022-11-03 02:04:24,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77396 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=30296, Invalid=134946, Unknown=0, NotChecked=0, Total=165242 [2022-11-03 02:04:24,664 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2302 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:24,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 196 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:04:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2022-11-03 02:04:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 1842. [2022-11-03 02:04:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1842 states have (on average 1.479913137893594) internal successors, (2726), 1841 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2726 transitions. [2022-11-03 02:04:24,790 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2726 transitions. Word has length 89 [2022-11-03 02:04:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:24,791 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2726 transitions. [2022-11-03 02:04:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2726 transitions. [2022-11-03 02:04:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:04:24,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:24,801 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:24,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:25,014 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:04:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 365437213, now seen corresponding path program 4 times [2022-11-03 02:04:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:25,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571141672] [2022-11-03 02:04:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:25,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:25,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571141672] [2022-11-03 02:04:25,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571141672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:25,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715258094] [2022-11-03 02:04:25,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:04:25,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:25,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:25,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:25,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:04:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:25,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:04:25,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 284 proven. 228 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-03 02:04:26,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 284 proven. 228 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-03 02:04:26,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715258094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:26,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [322586238] [2022-11-03 02:04:26,916 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:336) 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) [2022-11-03 02:04:26,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:26,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 55 [2022-11-03 02:04:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40123083] [2022-11-03 02:04:26,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:26,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-03 02:04:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-03 02:04:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=2453, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:04:26,919 INFO L87 Difference]: Start difference. First operand 1842 states and 2726 transitions. Second operand has 55 states, 55 states have (on average 4.072727272727272) internal successors, (224), 55 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:46,536 INFO L93 Difference]: Finished difference Result 5211 states and 7853 transitions. [2022-11-03 02:04:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2022-11-03 02:04:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.072727272727272) internal successors, (224), 55 states have internal predecessors, (224), 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 97 [2022-11-03 02:04:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:46,553 INFO L225 Difference]: With dead ends: 5211 [2022-11-03 02:04:46,554 INFO L226 Difference]: Without dead ends: 5208 [2022-11-03 02:04:46,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137553 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=51852, Invalid=234908, Unknown=0, NotChecked=0, Total=286760 [2022-11-03 02:04:46,567 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4432 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4432 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:46,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4432 Valid, 229 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:04:46,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2022-11-03 02:04:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 2156. [2022-11-03 02:04:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2156 states have (on average 1.4642857142857142) internal successors, (3157), 2155 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3157 transitions. [2022-11-03 02:04:46,642 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3157 transitions. Word has length 97 [2022-11-03 02:04:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:46,642 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 3157 transitions. [2022-11-03 02:04:46,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.072727272727272) internal successors, (224), 55 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3157 transitions. [2022-11-03 02:04:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 02:04:46,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:46,647 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 11, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:04:46,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:46,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:46,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:04:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1833917524, now seen corresponding path program 5 times [2022-11-03 02:04:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:46,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328471751] [2022-11-03 02:04:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:47,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:47,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328471751] [2022-11-03 02:04:47,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328471751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:47,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415854306] [2022-11-03 02:04:47,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:04:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:47,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:47,624 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:47,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:04:47,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-03 02:04:47,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:04:47,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:04:47,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 34 proven. 395 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-03 02:04:48,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 34 proven. 395 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-03 02:04:48,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415854306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477872038] [2022-11-03 02:04:48,889 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:336) 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) [2022-11-03 02:04:48,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:48,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 46 [2022-11-03 02:04:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635282373] [2022-11-03 02:04:48,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 02:04:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 02:04:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1711, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 02:04:48,893 INFO L87 Difference]: Start difference. First operand 2156 states and 3157 transitions. Second operand has 46 states, 46 states have (on average 4.521739130434782) internal successors, (208), 46 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:04,860 INFO L93 Difference]: Finished difference Result 9823 states and 14381 transitions. [2022-11-03 02:05:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2022-11-03 02:05:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.521739130434782) internal successors, (208), 46 states have internal predecessors, (208), 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 104 [2022-11-03 02:05:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:04,890 INFO L225 Difference]: With dead ends: 9823 [2022-11-03 02:05:04,890 INFO L226 Difference]: Without dead ends: 9727 [2022-11-03 02:05:04,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 526 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140343 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=51765, Invalid=226491, Unknown=0, NotChecked=0, Total=278256 [2022-11-03 02:05:04,905 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2248 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:04,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 271 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:05:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2022-11-03 02:05:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 4832. [2022-11-03 02:05:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 4832 states have (on average 1.4389486754966887) internal successors, (6953), 4831 states have internal predecessors, (6953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 6953 transitions. [2022-11-03 02:05:05,043 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 6953 transitions. Word has length 104 [2022-11-03 02:05:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:05,043 INFO L495 AbstractCegarLoop]: Abstraction has 4832 states and 6953 transitions. [2022-11-03 02:05:05,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.521739130434782) internal successors, (208), 46 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 6953 transitions. [2022-11-03 02:05:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:05:05,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:05,049 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 12, 12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:05,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:05,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:05,278 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:05:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -202581375, now seen corresponding path program 6 times [2022-11-03 02:05:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322939735] [2022-11-03 02:05:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:05,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:05,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322939735] [2022-11-03 02:05:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322939735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872884657] [2022-11-03 02:05:05,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:05:05,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:05,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:05,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:05,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:05:06,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:05:06,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:05:06,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:05:06,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 324 proven. 414 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 02:05:06,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 324 proven. 414 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 02:05:07,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872884657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:07,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1915610854] [2022-11-03 02:05:07,685 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:336) 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) [2022-11-03 02:05:07,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:07,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 25] total 69 [2022-11-03 02:05:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047287474] [2022-11-03 02:05:07,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:05:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-03 02:05:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-03 02:05:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=814, Invalid=3878, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 02:05:07,688 INFO L87 Difference]: Start difference. First operand 4832 states and 6953 transitions. Second operand has 69 states, 69 states have (on average 3.971014492753623) internal successors, (274), 69 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:43,242 INFO L93 Difference]: Finished difference Result 15225 states and 22532 transitions. [2022-11-03 02:05:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 712 states. [2022-11-03 02:05:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.971014492753623) internal successors, (274), 69 states have internal predecessors, (274), 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 111 [2022-11-03 02:05:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:43,281 INFO L225 Difference]: With dead ends: 15225 [2022-11-03 02:05:43,281 INFO L226 Difference]: Without dead ends: 15220 [2022-11-03 02:05:43,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 745 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273524 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=99157, Invalid=458105, Unknown=0, NotChecked=0, Total=557262 [2022-11-03 02:05:43,320 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6436 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6436 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:43,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6436 Valid, 265 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:05:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15220 states. [2022-11-03 02:05:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15220 to 5895. [2022-11-03 02:05:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5895 states, 5895 states have (on average 1.4459711620016964) internal successors, (8524), 5894 states have internal predecessors, (8524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5895 states to 5895 states and 8524 transitions. [2022-11-03 02:05:43,518 INFO L78 Accepts]: Start accepts. Automaton has 5895 states and 8524 transitions. Word has length 111 [2022-11-03 02:05:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:43,518 INFO L495 AbstractCegarLoop]: Abstraction has 5895 states and 8524 transitions. [2022-11-03 02:05:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.971014492753623) internal successors, (274), 69 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5895 states and 8524 transitions. [2022-11-03 02:05:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:05:43,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:43,527 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:05:43,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 02:05:43,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:05:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 11998868, now seen corresponding path program 7 times [2022-11-03 02:05:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518179678] [2022-11-03 02:05:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 0 proven. 857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:44,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518179678] [2022-11-03 02:05:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518179678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340777004] [2022-11-03 02:05:44,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:05:44,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:44,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:44,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:05:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:44,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:05:44,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 398 proven. 285 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 02:05:45,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 398 proven. 285 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 02:05:45,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340777004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:45,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1636926909] [2022-11-03 02:05:45,725 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:336) 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) [2022-11-03 02:05:45,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:45,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2022-11-03 02:05:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237532888] [2022-11-03 02:05:45,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:05:45,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-03 02:05:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-03 02:05:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2954, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 02:05:45,734 INFO L87 Difference]: Start difference. First operand 5895 states and 8524 transitions. Second operand has 60 states, 60 states have (on average 4.316666666666666) internal successors, (259), 60 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:12,641 INFO L93 Difference]: Finished difference Result 17653 states and 25954 transitions. [2022-11-03 02:06:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 681 states. [2022-11-03 02:06:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.316666666666666) internal successors, (259), 60 states have internal predecessors, (259), 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 118 [2022-11-03 02:06:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:12,692 INFO L225 Difference]: With dead ends: 17653 [2022-11-03 02:06:12,692 INFO L226 Difference]: Without dead ends: 17650 [2022-11-03 02:06:12,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 707 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256052 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=91789, Invalid=410183, Unknown=0, NotChecked=0, Total=501972 [2022-11-03 02:06:12,733 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3946 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3946 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:12,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3946 Valid, 329 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 02:06:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2022-11-03 02:06:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 7551. [2022-11-03 02:06:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7551 states, 7551 states have (on average 1.4427228181697789) internal successors, (10894), 7550 states have internal predecessors, (10894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7551 states to 7551 states and 10894 transitions. [2022-11-03 02:06:12,967 INFO L78 Accepts]: Start accepts. Automaton has 7551 states and 10894 transitions. Word has length 118 [2022-11-03 02:06:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:12,968 INFO L495 AbstractCegarLoop]: Abstraction has 7551 states and 10894 transitions. [2022-11-03 02:06:12,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.316666666666666) internal successors, (259), 60 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7551 states and 10894 transitions. [2022-11-03 02:06:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 02:06:12,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:12,980 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 11, 11, 11, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:06:13,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 02:06:13,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:06:13,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -602742077, now seen corresponding path program 8 times [2022-11-03 02:06:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:13,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939884015] [2022-11-03 02:06:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:13,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:13,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939884015] [2022-11-03 02:06:13,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939884015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774695867] [2022-11-03 02:06:13,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:06:13,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:13,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:13,972 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:06:14,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-03 02:06:14,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:06:14,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:06:14,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 40 proven. 725 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:06:15,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 40 proven. 725 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:06:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774695867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:15,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1269992325] [2022-11-03 02:06:15,799 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:336) 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) [2022-11-03 02:06:15,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:06:15,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 65 [2022-11-03 02:06:15,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660217846] [2022-11-03 02:06:15,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:06:15,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-03 02:06:15,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:15,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-03 02:06:15,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=686, Invalid=3474, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 02:06:15,803 INFO L87 Difference]: Start difference. First operand 7551 states and 10894 transitions. Second operand has 65 states, 65 states have (on average 4.246153846153846) internal successors, (276), 65 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:54,961 INFO L93 Difference]: Finished difference Result 30099 states and 43965 transitions. [2022-11-03 02:06:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 882 states. [2022-11-03 02:06:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.246153846153846) internal successors, (276), 65 states have internal predecessors, (276), 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 124 [2022-11-03 02:06:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:55,035 INFO L225 Difference]: With dead ends: 30099 [2022-11-03 02:06:55,036 INFO L226 Difference]: Without dead ends: 30093 [2022-11-03 02:06:55,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 909 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430931 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=153514, Invalid=675496, Unknown=0, NotChecked=0, Total=829010 [2022-11-03 02:06:55,104 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4421 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4421 Valid, 389 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:06:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30093 states. [2022-11-03 02:06:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30093 to 16902. [2022-11-03 02:06:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16902 states, 16902 states have (on average 1.4334398296059638) internal successors, (24228), 16901 states have internal predecessors, (24228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16902 states to 16902 states and 24228 transitions. [2022-11-03 02:06:55,567 INFO L78 Accepts]: Start accepts. Automaton has 16902 states and 24228 transitions. Word has length 124 [2022-11-03 02:06:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:55,567 INFO L495 AbstractCegarLoop]: Abstraction has 16902 states and 24228 transitions. [2022-11-03 02:06:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.246153846153846) internal successors, (276), 65 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 16902 states and 24228 transitions. [2022-11-03 02:06:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 02:06:55,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:55,589 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 12, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-03 02:06:55,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:55,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:55,802 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:06:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash 339974520, now seen corresponding path program 9 times [2022-11-03 02:06:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:55,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586760278] [2022-11-03 02:06:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:56,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:56,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586760278] [2022-11-03 02:06:56,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586760278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:56,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506502176] [2022-11-03 02:06:56,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:06:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:56,824 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:56,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 02:06:57,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:06:57,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:06:57,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:06:57,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 42 proven. 689 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-03 02:06:58,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 42 proven. 689 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-03 02:06:58,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506502176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1514557732] [2022-11-03 02:06:58,705 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:336) 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) [2022-11-03 02:06:58,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:06:58,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 60 [2022-11-03 02:06:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965281174] [2022-11-03 02:06:58,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:06:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-03 02:06:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-03 02:06:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=2966, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 02:06:58,709 INFO L87 Difference]: Start difference. First operand 16902 states and 24228 transitions. Second operand has 60 states, 60 states have (on average 4.583333333333333) internal successors, (275), 60 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:27,126 INFO L93 Difference]: Finished difference Result 46624 states and 68282 transitions. [2022-11-03 02:07:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 638 states. [2022-11-03 02:07:27,130 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.583333333333333) internal successors, (275), 60 states have internal predecessors, (275), 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 133 [2022-11-03 02:07:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:27,239 INFO L225 Difference]: With dead ends: 46624 [2022-11-03 02:07:27,240 INFO L226 Difference]: Without dead ends: 46621 [2022-11-03 02:07:27,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 668 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222654 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=79014, Invalid=369216, Unknown=0, NotChecked=0, Total=448230 [2022-11-03 02:07:27,269 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3694 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:27,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3694 Valid, 287 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:07:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46621 states. [2022-11-03 02:07:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46621 to 30588. [2022-11-03 02:07:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30588 states, 30588 states have (on average 1.4438014907806984) internal successors, (44163), 30587 states have internal predecessors, (44163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30588 states to 30588 states and 44163 transitions. [2022-11-03 02:07:27,956 INFO L78 Accepts]: Start accepts. Automaton has 30588 states and 44163 transitions. Word has length 133 [2022-11-03 02:07:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:27,957 INFO L495 AbstractCegarLoop]: Abstraction has 30588 states and 44163 transitions. [2022-11-03 02:07:27,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.583333333333333) internal successors, (275), 60 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 30588 states and 44163 transitions. [2022-11-03 02:07:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:07:27,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:27,989 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 13, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-03 02:07:28,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:28,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 02:07:28,214 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:07:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1333319463, now seen corresponding path program 10 times [2022-11-03 02:07:28,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:28,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738407296] [2022-11-03 02:07:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 0 proven. 1123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:29,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:29,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738407296] [2022-11-03 02:07:29,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738407296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:29,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061332930] [2022-11-03 02:07:29,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:07:29,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:29,119 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:29,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 02:07:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:29,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:07:29,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 524 proven. 293 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:07:29,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 524 proven. 293 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:07:30,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061332930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147319648] [2022-11-03 02:07:30,407 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:336) 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) [2022-11-03 02:07:30,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:07:30,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 61 [2022-11-03 02:07:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84215060] [2022-11-03 02:07:30,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:07:30,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-03 02:07:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-03 02:07:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=3062, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:07:30,410 INFO L87 Difference]: Start difference. First operand 30588 states and 44163 transitions. Second operand has 61 states, 61 states have (on average 4.590163934426229) internal successors, (280), 61 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:08:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:07,975 INFO L93 Difference]: Finished difference Result 90252 states and 133497 transitions. [2022-11-03 02:08:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 910 states. [2022-11-03 02:08:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.590163934426229) internal successors, (280), 61 states have internal predecessors, (280), 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 137 [2022-11-03 02:08:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:08,239 INFO L225 Difference]: With dead ends: 90252 [2022-11-03 02:08:08,239 INFO L226 Difference]: Without dead ends: 90244 [2022-11-03 02:08:08,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 938 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471527 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=153424, Invalid=729236, Unknown=0, NotChecked=0, Total=882660 [2022-11-03 02:08:08,324 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2717 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:08,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2717 Valid, 430 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:08:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90244 states. [2022-11-03 02:08:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90244 to 53149. [2022-11-03 02:08:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53149 states, 53149 states have (on average 1.4553989726993923) internal successors, (77353), 53148 states have internal predecessors, (77353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:08:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53149 states to 53149 states and 77353 transitions. [2022-11-03 02:08:09,971 INFO L78 Accepts]: Start accepts. Automaton has 53149 states and 77353 transitions. Word has length 137 [2022-11-03 02:08:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:09,971 INFO L495 AbstractCegarLoop]: Abstraction has 53149 states and 77353 transitions. [2022-11-03 02:08:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.590163934426229) internal successors, (280), 61 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:08:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 53149 states and 77353 transitions. [2022-11-03 02:08:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 02:08:10,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:10,050 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 14, 14, 14, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:08:10,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:10,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 02:08:10,274 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:08:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1779925204, now seen corresponding path program 11 times [2022-11-03 02:08:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521404419] [2022-11-03 02:08:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 0 proven. 1293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:11,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521404419] [2022-11-03 02:08:11,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521404419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407580259] [2022-11-03 02:08:11,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:08:11,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:11,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:11,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 02:08:12,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-03 02:08:12,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:08:12,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:08:12,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 46 proven. 1055 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:08:12,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 46 proven. 1055 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:08:14,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407580259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:14,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386607882] [2022-11-03 02:08:14,080 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:336) 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) [2022-11-03 02:08:14,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:08:14,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 28] total 80 [2022-11-03 02:08:14,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598538150] [2022-11-03 02:08:14,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:08:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-03 02:08:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-03 02:08:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1040, Invalid=5280, Unknown=0, NotChecked=0, Total=6320 [2022-11-03 02:08:14,084 INFO L87 Difference]: Start difference. First operand 53149 states and 77353 transitions. Second operand has 80 states, 80 states have (on average 4.125) internal successors, (330), 80 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:23,091 INFO L93 Difference]: Finished difference Result 155640 states and 230475 transitions. [2022-11-03 02:09:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1148 states. [2022-11-03 02:09:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.125) internal successors, (330), 80 states have internal predecessors, (330), 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 142 [2022-11-03 02:09:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:23,486 INFO L225 Difference]: With dead ends: 155640 [2022-11-03 02:09:23,486 INFO L226 Difference]: Without dead ends: 155633 [2022-11-03 02:09:23,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1415 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739638 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=249014, Invalid=1161142, Unknown=0, NotChecked=0, Total=1410156 [2022-11-03 02:09:23,595 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7457 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 4070 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7457 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 5346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 4070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:23,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7457 Valid, 441 Invalid, 5346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 4070 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:09:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155633 states. [2022-11-03 02:09:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155633 to 72627. [2022-11-03 02:09:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72627 states, 72627 states have (on average 1.4538807881366433) internal successors, (105591), 72626 states have internal predecessors, (105591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72627 states to 72627 states and 105591 transitions. [2022-11-03 02:09:25,940 INFO L78 Accepts]: Start accepts. Automaton has 72627 states and 105591 transitions. Word has length 142 [2022-11-03 02:09:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:25,940 INFO L495 AbstractCegarLoop]: Abstraction has 72627 states and 105591 transitions. [2022-11-03 02:09:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.125) internal successors, (330), 80 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 72627 states and 105591 transitions. [2022-11-03 02:09:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-03 02:09:25,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:25,994 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 15, 15, 15, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 02:09:26,210 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:09:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1417329539, now seen corresponding path program 12 times [2022-11-03 02:09:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376199658] [2022-11-03 02:09:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 0 proven. 1417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:27,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:27,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376199658] [2022-11-03 02:09:27,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376199658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:27,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014204228] [2022-11-03 02:09:27,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:09:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:27,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:27,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 02:09:27,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:09:27,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:09:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:09:27,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 368 proven. 935 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 02:09:28,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:09:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 368 proven. 935 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 02:09:29,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014204228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:09:29,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109629265] [2022-11-03 02:09:29,750 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:336) 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) [2022-11-03 02:09:29,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:29,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 30] total 85 [2022-11-03 02:09:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074358667] [2022-11-03 02:09:29,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:09:29,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-03 02:09:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-03 02:09:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=5964, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 02:09:29,754 INFO L87 Difference]: Start difference. First operand 72627 states and 105591 transitions. Second operand has 85 states, 85 states have (on average 4.129411764705883) internal successors, (351), 85 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:11:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:01,899 INFO L93 Difference]: Finished difference Result 177715 states and 264014 transitions. [2022-11-03 02:11:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1217 states. [2022-11-03 02:11:01,899 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.129411764705883) internal successors, (351), 85 states have internal predecessors, (351), 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 148 [2022-11-03 02:11:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:02,308 INFO L225 Difference]: With dead ends: 177715 [2022-11-03 02:11:02,308 INFO L226 Difference]: Without dead ends: 177708 [2022-11-03 02:11:02,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815087 ImplicationChecksByTransitivity, 82.3s TimeCoverageRelationStatistics Valid=268512, Invalid=1325394, Unknown=0, NotChecked=0, Total=1593906 [2022-11-03 02:11:02,647 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9917 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 3164 mSolverCounterSat, 1947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9917 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 5111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1947 IncrementalHoareTripleChecker+Valid, 3164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:02,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9917 Valid, 367 Invalid, 5111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1947 Valid, 3164 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:11:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177708 states. [2022-11-03 02:11:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177708 to 93470. [2022-11-03 02:11:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93470 states, 93470 states have (on average 1.450583074783353) internal successors, (135586), 93469 states have internal predecessors, (135586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:11:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93470 states to 93470 states and 135586 transitions. [2022-11-03 02:11:05,602 INFO L78 Accepts]: Start accepts. Automaton has 93470 states and 135586 transitions. Word has length 148 [2022-11-03 02:11:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:05,603 INFO L495 AbstractCegarLoop]: Abstraction has 93470 states and 135586 transitions. [2022-11-03 02:11:05,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.129411764705883) internal successors, (351), 85 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:11:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 93470 states and 135586 transitions. [2022-11-03 02:11:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:11:05,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:05,677 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 17, 17, 17, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:11:05,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-03 02:11:05,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 02:11:05,894 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-03 02:11:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -834614920, now seen corresponding path program 13 times [2022-11-03 02:11:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:05,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622616538] [2022-11-03 02:11:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 0 proven. 1579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:11:07,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622616538] [2022-11-03 02:11:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622616538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446994911] [2022-11-03 02:11:07,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:11:07,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:07,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:07,026 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:07,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3fde8-ddff-415b-8ce7-31908ae1415d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-03 02:11:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:07,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:11:07,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 594 proven. 845 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-03 02:11:08,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:11:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 594 proven. 845 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-03 02:11:09,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446994911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:11:09,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054229673] [2022-11-03 02:11:09,685 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:336) 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) [2022-11-03 02:11:09,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:11:09,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 34, 34] total 94 [2022-11-03 02:11:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904026565] [2022-11-03 02:11:09,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:11:09,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-03 02:11:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:09,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-03 02:11:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=7295, Unknown=0, NotChecked=0, Total=8742 [2022-11-03 02:11:09,688 INFO L87 Difference]: Start difference. First operand 93470 states and 135586 transitions. Second operand has 94 states, 94 states have (on average 4.053191489361702) internal successors, (381), 94 states have internal predecessors, (381), 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)