./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS --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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- 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-8393723 [2022-11-19 07:47:21,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:47:21,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:47:21,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:47:21,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:47:21,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:47:21,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:47:21,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:47:21,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:47:21,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:47:21,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:47:21,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:47:21,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:47:21,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:47:21,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:47:21,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:47:21,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:47:21,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:47:21,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:47:21,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:47:21,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:47:21,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:47:21,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:47:21,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:47:21,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:47:21,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:47:21,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:47:21,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:47:21,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:47:21,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:47:21,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:47:21,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:47:21,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:47:21,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:47:21,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:47:21,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:47:21,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:47:21,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:47:21,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:47:21,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:47:21,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:47:21,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:47:21,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:47:21,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:47:21,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:47:21,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:47:21,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:47:21,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:47:21,814 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:47:21,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:47:21,815 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:47:21,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:47:21,816 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:47:21,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:47:21,816 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:47:21,817 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:47:21,817 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:47:21,817 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:47:21,817 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:47:21,817 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:47:21,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:47:21,818 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:47:21,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:47:21,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:47:21,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:47:21,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:47:21,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:47:21,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:47:21,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:47:21,834 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:47:21,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:47:21,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:47:21,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:47:21,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:47:21,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:47:21,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:47:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:21,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:47:21,836 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:47:21,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:47:21,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:47:21,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:47:21,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:47:21,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:47:21,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:47:21,837 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_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-11-19 07:47:22,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:47:22,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:47:22,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:47:22,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:47:22,140 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:47:22,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-19 07:47:22,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/data/8ae5fb412/0ac2fc145fc34ec6bbfbe5eb2ee7c1a3/FLAG8b16bae10 [2022-11-19 07:47:22,697 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:47:22,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-19 07:47:22,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/data/8ae5fb412/0ac2fc145fc34ec6bbfbe5eb2ee7c1a3/FLAG8b16bae10 [2022-11-19 07:47:23,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/data/8ae5fb412/0ac2fc145fc34ec6bbfbe5eb2ee7c1a3 [2022-11-19 07:47:23,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:47:23,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:47:23,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:23,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:47:23,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:47:23,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7219d35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23, skipping insertion in model container [2022-11-19 07:47:23,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:47:23,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:47:23,309 WARN L234 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_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-19 07:47:23,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:23,324 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:47:23,346 WARN L234 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_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-19 07:47:23,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:23,366 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:47:23,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23 WrapperNode [2022-11-19 07:47:23,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:23,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:23,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:47:23,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:47:23,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,405 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-19 07:47:23,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:23,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:47:23,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:47:23,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:47:23,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,433 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:47:23,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:47:23,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:47:23,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:47:23,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (1/1) ... [2022-11-19 07:47:23,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:23,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:23,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:47:23,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:47:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:47:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:47:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:47:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:47:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:47:23,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:47:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:47:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:47:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 07:47:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 07:47:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:47:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:47:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:47:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:47:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:47:23,527 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:47:23,659 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:47:23,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:47:24,118 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:47:24,127 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:47:24,128 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:47:24,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:24 BoogieIcfgContainer [2022-11-19 07:47:24,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:47:24,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:47:24,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:47:24,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:47:24,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:23" (1/3) ... [2022-11-19 07:47:24,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed4d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:24, skipping insertion in model container [2022-11-19 07:47:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:23" (2/3) ... [2022-11-19 07:47:24,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed4d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:24, skipping insertion in model container [2022-11-19 07:47:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:24" (3/3) ... [2022-11-19 07:47:24,153 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-11-19 07:47:24,162 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:47:24,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:47:24,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 07:47:24,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:47:24,304 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 07:47:24,362 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:47:24,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 175 transitions, 374 flow [2022-11-19 07:47:24,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 175 transitions, 374 flow [2022-11-19 07:47:24,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 374 flow [2022-11-19 07:47:24,502 INFO L130 PetriNetUnfolder]: 12/172 cut-off events. [2022-11-19 07:47:24,503 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-19 07:47:24,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-19 07:47:24,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2022-11-19 07:47:32,247 INFO L134 LiptonReduction]: Checked pairs total: 3387 [2022-11-19 07:47:32,247 INFO L136 LiptonReduction]: Total number of compositions: 179 [2022-11-19 07:47:32,263 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 94 flow [2022-11-19 07:47:32,338 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 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) [2022-11-19 07:47:32,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:47:32,373 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;@59301eb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:47:32,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-19 07:47:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 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) [2022-11-19 07:47:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:47:32,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:32,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:47:32,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 21220, now seen corresponding path program 1 times [2022-11-19 07:47:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:32,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788932309] [2022-11-19 07:47:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:32,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:32,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788932309] [2022-11-19 07:47:32,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788932309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:32,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:32,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:47:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833358735] [2022-11-19 07:47:32,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:32,698 INFO L87 Difference]: Start difference. First operand has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:32,872 INFO L93 Difference]: Finished difference Result 735 states and 2405 transitions. [2022-11-19 07:47:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:32,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-19 07:47:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:32,894 INFO L225 Difference]: With dead ends: 735 [2022-11-19 07:47:32,895 INFO L226 Difference]: Without dead ends: 735 [2022-11-19 07:47:32,895 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 [2022-11-19 07:47:32,898 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:32,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-19 07:47:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 370. [2022-11-19 07:47:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 342 states have (on average 3.526315789473684) internal successors, (1206), 369 states have internal predecessors, (1206), 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) [2022-11-19 07:47:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1206 transitions. [2022-11-19 07:47:32,983 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1206 transitions. Word has length 2 [2022-11-19 07:47:32,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:32,983 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1206 transitions. [2022-11-19 07:47:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1206 transitions. [2022-11-19 07:47:32,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:47:32,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:32,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:47:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:47:32,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:32,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 658704, now seen corresponding path program 1 times [2022-11-19 07:47:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:32,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462156091] [2022-11-19 07:47:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:33,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:33,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462156091] [2022-11-19 07:47:33,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462156091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:33,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313288230] [2022-11-19 07:47:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:33,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:33,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:47:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:33,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:33,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:33,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313288230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [710376968] [2022-11-19 07:47:33,345 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) 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) [2022-11-19 07:47:33,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:47:33,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-19 07:47:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032441634] [2022-11-19 07:47:33,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:47:33,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:47:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:47:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:47:33,350 INFO L87 Difference]: Start difference. First operand 370 states and 1206 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-19 07:47:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:33,677 INFO L93 Difference]: Finished difference Result 1833 states and 6011 transitions. [2022-11-19 07:47:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:47:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 07:47:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:33,697 INFO L225 Difference]: With dead ends: 1833 [2022-11-19 07:47:33,698 INFO L226 Difference]: Without dead ends: 1833 [2022-11-19 07:47:33,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:47:33,703 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 182 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:33,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 15 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:47:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2022-11-19 07:47:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 373. [2022-11-19 07:47:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 345 states have (on average 3.5217391304347827) internal successors, (1215), 372 states have internal predecessors, (1215), 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) [2022-11-19 07:47:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1215 transitions. [2022-11-19 07:47:33,767 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1215 transitions. Word has length 3 [2022-11-19 07:47:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:33,768 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 1215 transitions. [2022-11-19 07:47:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-19 07:47:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1215 transitions. [2022-11-19 07:47:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:47:33,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:33,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:47:33,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:47:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:33,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash 658705, now seen corresponding path program 1 times [2022-11-19 07:47:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:33,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670226290] [2022-11-19 07:47:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:34,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670226290] [2022-11-19 07:47:34,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670226290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222007799] [2022-11-19 07:47:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:34,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:34,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:34,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:34,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:47:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:34,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:34,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:34,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:34,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222007799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:34,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:34,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-19 07:47:34,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712811113] [2022-11-19 07:47:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:34,225 INFO L87 Difference]: Start difference. First operand 373 states and 1215 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:34,343 INFO L93 Difference]: Finished difference Result 737 states and 2410 transitions. [2022-11-19 07:47:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:47:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 07:47:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:34,349 INFO L225 Difference]: With dead ends: 737 [2022-11-19 07:47:34,350 INFO L226 Difference]: Without dead ends: 737 [2022-11-19 07:47:34,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:34,358 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:34,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 9 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-19 07:47:34,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 372. [2022-11-19 07:47:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 345 states have (on average 3.5101449275362318) internal successors, (1211), 371 states have internal predecessors, (1211), 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) [2022-11-19 07:47:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1211 transitions. [2022-11-19 07:47:34,384 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1211 transitions. Word has length 3 [2022-11-19 07:47:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:34,385 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1211 transitions. [2022-11-19 07:47:34,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1211 transitions. [2022-11-19 07:47:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:47:34,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:34,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:47:34,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:47:34,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-19 07:47:34,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:34,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash 633323496, now seen corresponding path program 1 times [2022-11-19 07:47:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:34,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085076491] [2022-11-19 07:47:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:34,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:34,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:34,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085076491] [2022-11-19 07:47:34,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085076491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:34,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:34,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255380119] [2022-11-19 07:47:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:34,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:34,684 INFO L87 Difference]: Start difference. First operand 372 states and 1211 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:34,775 INFO L93 Difference]: Finished difference Result 550 states and 1782 transitions. [2022-11-19 07:47:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:34,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:47:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:34,784 INFO L225 Difference]: With dead ends: 550 [2022-11-19 07:47:34,784 INFO L226 Difference]: Without dead ends: 550 [2022-11-19 07:47:34,785 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 [2022-11-19 07:47:34,787 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:34,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-19 07:47:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 434. [2022-11-19 07:47:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 407 states have (on average 3.6363636363636362) internal successors, (1480), 433 states have internal predecessors, (1480), 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) [2022-11-19 07:47:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1480 transitions. [2022-11-19 07:47:34,808 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1480 transitions. Word has length 5 [2022-11-19 07:47:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:34,809 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 1480 transitions. [2022-11-19 07:47:34,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1480 transitions. [2022-11-19 07:47:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:47:34,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:34,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:47:34,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:47:34,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1841806486, now seen corresponding path program 1 times [2022-11-19 07:47:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:34,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918294480] [2022-11-19 07:47:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:34,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918294480] [2022-11-19 07:47:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918294480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:34,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:34,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:47:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774058234] [2022-11-19 07:47:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:47:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:47:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:34,902 INFO L87 Difference]: Start difference. First operand 434 states and 1480 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-19 07:47:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:35,046 INFO L93 Difference]: Finished difference Result 633 states and 2070 transitions. [2022-11-19 07:47:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:47:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 [2022-11-19 07:47:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:35,051 INFO L225 Difference]: With dead ends: 633 [2022-11-19 07:47:35,051 INFO L226 Difference]: Without dead ends: 629 [2022-11-19 07:47:35,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:47:35,052 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:35,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 13 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-19 07:47:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 591. [2022-11-19 07:47:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 564 states have (on average 3.5336879432624113) internal successors, (1993), 590 states have internal predecessors, (1993), 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) [2022-11-19 07:47:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1993 transitions. [2022-11-19 07:47:35,095 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1993 transitions. Word has length 6 [2022-11-19 07:47:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:35,095 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1993 transitions. [2022-11-19 07:47:35,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-19 07:47:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1993 transitions. [2022-11-19 07:47:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:47:35,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:35,096 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-19 07:47:35,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:47:35,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1850507804, now seen corresponding path program 2 times [2022-11-19 07:47:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353248412] [2022-11-19 07:47:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:35,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353248412] [2022-11-19 07:47:35,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353248412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982403843] [2022-11-19 07:47:35,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:35,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:35,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:35,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:47:35,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:47:35,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:35,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:47:35,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:47:35,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982403843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:35,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-19 07:47:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775532742] [2022-11-19 07:47:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:47:35,370 INFO L87 Difference]: Start difference. First operand 591 states and 1993 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:35,413 INFO L93 Difference]: Finished difference Result 590 states and 1992 transitions. [2022-11-19 07:47:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:35,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:47:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:35,417 INFO L225 Difference]: With dead ends: 590 [2022-11-19 07:47:35,417 INFO L226 Difference]: Without dead ends: 590 [2022-11-19 07:47:35,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:47:35,419 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:35,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:47:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-19 07:47:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 587. [2022-11-19 07:47:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 561 states have (on average 3.5401069518716577) internal successors, (1986), 586 states have internal predecessors, (1986), 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) [2022-11-19 07:47:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1986 transitions. [2022-11-19 07:47:35,442 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1986 transitions. Word has length 6 [2022-11-19 07:47:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:35,443 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 1986 transitions. [2022-11-19 07:47:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1986 transitions. [2022-11-19 07:47:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:47:35,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:35,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:35,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:35,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1256031322, now seen corresponding path program 1 times [2022-11-19 07:47:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:35,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768178814] [2022-11-19 07:47:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:35,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:35,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768178814] [2022-11-19 07:47:35,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768178814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:35,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:35,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233668858] [2022-11-19 07:47:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:35,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:35,692 INFO L87 Difference]: Start difference. First operand 587 states and 1986 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:35,769 INFO L93 Difference]: Finished difference Result 815 states and 2759 transitions. [2022-11-19 07:47:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:35,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:47:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:35,775 INFO L225 Difference]: With dead ends: 815 [2022-11-19 07:47:35,775 INFO L226 Difference]: Without dead ends: 815 [2022-11-19 07:47:35,775 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 [2022-11-19 07:47:35,776 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:35,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-11-19 07:47:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 699. [2022-11-19 07:47:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 673 states have (on average 3.6849925705794946) internal successors, (2480), 698 states have internal predecessors, (2480), 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) [2022-11-19 07:47:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 2480 transitions. [2022-11-19 07:47:35,805 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 2480 transitions. Word has length 7 [2022-11-19 07:47:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:35,806 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 2480 transitions. [2022-11-19 07:47:35,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 2480 transitions. [2022-11-19 07:47:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:47:35,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:35,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:47:35,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1522464874, now seen corresponding path program 1 times [2022-11-19 07:47:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140307758] [2022-11-19 07:47:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:47:35,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140307758] [2022-11-19 07:47:35,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140307758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558255469] [2022-11-19 07:47:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:35,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:35,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:35,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:47:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:35,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:35,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:47:35,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:35,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558255469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:35,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:35,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-19 07:47:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246587299] [2022-11-19 07:47:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:35,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:35,985 INFO L87 Difference]: Start difference. First operand 699 states and 2480 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:36,085 INFO L93 Difference]: Finished difference Result 763 states and 2597 transitions. [2022-11-19 07:47:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:47:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:47:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:36,090 INFO L225 Difference]: With dead ends: 763 [2022-11-19 07:47:36,091 INFO L226 Difference]: Without dead ends: 763 [2022-11-19 07:47:36,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:36,092 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:36,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 11 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-11-19 07:47:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 625. [2022-11-19 07:47:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 608 states have (on average 3.648026315789474) internal successors, (2218), 624 states have internal predecessors, (2218), 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) [2022-11-19 07:47:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2218 transitions. [2022-11-19 07:47:36,121 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2218 transitions. Word has length 7 [2022-11-19 07:47:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:36,121 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 2218 transitions. [2022-11-19 07:47:36,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2218 transitions. [2022-11-19 07:47:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:47:36,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:36,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:36,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:36,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:36,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1522464873, now seen corresponding path program 1 times [2022-11-19 07:47:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674856666] [2022-11-19 07:47:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:47:36,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674856666] [2022-11-19 07:47:36,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674856666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598812256] [2022-11-19 07:47:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:36,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:47:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:36,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:47:36,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:36,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:36,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598812256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:36,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947757523] [2022-11-19 07:47:36,621 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) [2022-11-19 07:47:36,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:47:36,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-11-19 07:47:36,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420302670] [2022-11-19 07:47:36,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:47:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:47:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:47:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:47:36,627 INFO L87 Difference]: Start difference. First operand 625 states and 2218 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) [2022-11-19 07:47:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:37,271 INFO L93 Difference]: Finished difference Result 1433 states and 4666 transitions. [2022-11-19 07:47:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 07:47:37,272 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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 7 [2022-11-19 07:47:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:37,281 INFO L225 Difference]: With dead ends: 1433 [2022-11-19 07:47:37,281 INFO L226 Difference]: Without dead ends: 1427 [2022-11-19 07:47:37,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:47:37,283 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 442 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:37,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 70 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:47:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-11-19 07:47:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 821. [2022-11-19 07:47:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 804 states have (on average 3.7723880597014925) internal successors, (3033), 820 states have internal predecessors, (3033), 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) [2022-11-19 07:47:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 3033 transitions. [2022-11-19 07:47:37,323 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 3033 transitions. Word has length 7 [2022-11-19 07:47:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:37,323 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 3033 transitions. [2022-11-19 07:47:37,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) [2022-11-19 07:47:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 3033 transitions. [2022-11-19 07:47:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:47:37,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:37,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:37,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:37,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash -282264670, now seen corresponding path program 1 times [2022-11-19 07:47:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:37,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116127405] [2022-11-19 07:47:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:37,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:37,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116127405] [2022-11-19 07:47:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116127405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937037794] [2022-11-19 07:47:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:37,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:37,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:37,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:47:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:37,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:37,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:37,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:37,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937037794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544226598] [2022-11-19 07:47:37,708 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) [2022-11-19 07:47:37,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:47:37,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 07:47:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882136217] [2022-11-19 07:47:37,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:47:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:47:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:47:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:47:37,709 INFO L87 Difference]: Start difference. First operand 821 states and 3033 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2022-11-19 07:47:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:37,885 INFO L93 Difference]: Finished difference Result 1745 states and 6569 transitions. [2022-11-19 07:47:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:47:37,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 8 [2022-11-19 07:47:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:37,898 INFO L225 Difference]: With dead ends: 1745 [2022-11-19 07:47:37,899 INFO L226 Difference]: Without dead ends: 1745 [2022-11-19 07:47:37,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:47:37,900 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 189 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:37,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 15 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:47:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2022-11-19 07:47:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1217. [2022-11-19 07:47:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1200 states have (on average 4.3575) internal successors, (5229), 1216 states have internal predecessors, (5229), 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) [2022-11-19 07:47:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 5229 transitions. [2022-11-19 07:47:37,961 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 5229 transitions. Word has length 8 [2022-11-19 07:47:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:37,961 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 5229 transitions. [2022-11-19 07:47:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2022-11-19 07:47:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 5229 transitions. [2022-11-19 07:47:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:47:37,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:37,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:37,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:38,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:47:38,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -282264668, now seen corresponding path program 1 times [2022-11-19 07:47:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:38,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940097378] [2022-11-19 07:47:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:38,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940097378] [2022-11-19 07:47:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940097378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:38,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:38,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563050764] [2022-11-19 07:47:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:38,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:38,214 INFO L87 Difference]: Start difference. First operand 1217 states and 5229 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-19 07:47:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:38,288 INFO L93 Difference]: Finished difference Result 1085 states and 4353 transitions. [2022-11-19 07:47:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-19 07:47:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:38,296 INFO L225 Difference]: With dead ends: 1085 [2022-11-19 07:47:38,296 INFO L226 Difference]: Without dead ends: 1085 [2022-11-19 07:47:38,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:38,297 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:38,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-19 07:47:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1085. [2022-11-19 07:47:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1074 states have (on average 4.053072625698324) internal successors, (4353), 1084 states have internal predecessors, (4353), 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) [2022-11-19 07:47:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 4353 transitions. [2022-11-19 07:47:38,339 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 4353 transitions. Word has length 8 [2022-11-19 07:47:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:38,340 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 4353 transitions. [2022-11-19 07:47:38,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-19 07:47:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 4353 transitions. [2022-11-19 07:47:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:47:38,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:38,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:38,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:47:38,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:38,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash -154893745, now seen corresponding path program 1 times [2022-11-19 07:47:38,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:38,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644490615] [2022-11-19 07:47:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:38,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:38,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644490615] [2022-11-19 07:47:38,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644490615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:38,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:38,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694318106] [2022-11-19 07:47:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:38,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:47:38,401 INFO L87 Difference]: Start difference. First operand 1085 states and 4353 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:38,472 INFO L93 Difference]: Finished difference Result 907 states and 3571 transitions. [2022-11-19 07:47:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:47:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 07:47:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:38,478 INFO L225 Difference]: With dead ends: 907 [2022-11-19 07:47:38,479 INFO L226 Difference]: Without dead ends: 869 [2022-11-19 07:47:38,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:38,480 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:38,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:47:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-19 07:47:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2022-11-19 07:47:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 862 states have (on average 3.831786542923434) internal successors, (3303), 868 states have internal predecessors, (3303), 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) [2022-11-19 07:47:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 3303 transitions. [2022-11-19 07:47:38,514 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 3303 transitions. Word has length 9 [2022-11-19 07:47:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 3303 transitions. [2022-11-19 07:47:38,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 3303 transitions. [2022-11-19 07:47:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:47:38,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:38,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:47:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:47:38,516 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:38,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:38,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1992841897, now seen corresponding path program 2 times [2022-11-19 07:47:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:38,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63027668] [2022-11-19 07:47:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:47:38,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63027668] [2022-11-19 07:47:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63027668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381644641] [2022-11-19 07:47:38,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:38,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:38,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:47:38,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:47:38,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:38,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:38,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:47:38,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:38,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381644641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:38,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:38,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-19 07:47:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107063621] [2022-11-19 07:47:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:47:38,696 INFO L87 Difference]: Start difference. First operand 869 states and 3303 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:38,727 INFO L93 Difference]: Finished difference Result 689 states and 2575 transitions. [2022-11-19 07:47:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:38,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 07:47:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:38,741 INFO L225 Difference]: With dead ends: 689 [2022-11-19 07:47:38,741 INFO L226 Difference]: Without dead ends: 643 [2022-11-19 07:47:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:47:38,742 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:38,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:47:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-19 07:47:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 455. [2022-11-19 07:47:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.4030837004405288) internal successors, (1545), 454 states have internal predecessors, (1545), 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) [2022-11-19 07:47:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1545 transitions. [2022-11-19 07:47:38,764 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1545 transitions. Word has length 9 [2022-11-19 07:47:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:38,765 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 1545 transitions. [2022-11-19 07:47:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1545 transitions. [2022-11-19 07:47:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:47:38,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:38,766 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:38,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:38,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:47:38,982 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-19 07:47:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 599825062, now seen corresponding path program 2 times [2022-11-19 07:47:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:38,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857776907] [2022-11-19 07:47:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:39,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:39,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857776907] [2022-11-19 07:47:39,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857776907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:39,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280314076] [2022-11-19 07:47:39,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:39,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:39,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:39,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:39,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:47:39,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:47:39,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:39,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:39,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:47:39,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:39,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280314076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:39,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:39,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-19 07:47:39,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216284913] [2022-11-19 07:47:39,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:39,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:47:39,205 INFO L87 Difference]: Start difference. First operand 455 states and 1545 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-19 07:47:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:39,229 INFO L93 Difference]: Finished difference Result 393 states and 1330 transitions. [2022-11-19 07:47:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:47:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:39,230 INFO L225 Difference]: With dead ends: 393 [2022-11-19 07:47:39,230 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:47:39,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:47:39,231 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:39,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:47:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:47:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:47:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-19 07:47:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:47:39,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-19 07:47:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:39,233 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:47:39,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-19 07:47:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:47:39,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:47:39,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-19 07:47:39,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-19 07:47:39,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-19 07:47:39,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-19 07:47:39,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-19 07:47:39,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-19 07:47:39,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:39,446 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:39,450 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 07:47:39,450 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:47:39,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:39 BasicIcfg [2022-11-19 07:47:39,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:47:39,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:47:39,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:47:39,453 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:47:39,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:24" (3/4) ... [2022-11-19 07:47:39,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:47:39,461 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-19 07:47:39,461 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-19 07:47:39,461 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-19 07:47:39,466 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-19 07:47:39,466 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 07:47:39,466 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:47:39,466 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:47:39,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:47:39,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:47:39,512 INFO L158 Benchmark]: Toolchain (without parser) took 16447.34ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 62.3MB in the beginning and 72.3MB in the end (delta: -9.9MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,512 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:47:39,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.83ms. Allocated memory is still 104.9MB. Free memory was 62.1MB in the beginning and 78.0MB in the end (delta: -15.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.35ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,514 INFO L158 Benchmark]: Boogie Preprocessor took 31.69ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,515 INFO L158 Benchmark]: RCFGBuilder took 691.93ms. Allocated memory is still 104.9MB. Free memory was 74.5MB in the beginning and 57.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,515 INFO L158 Benchmark]: TraceAbstraction took 15320.57ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,515 INFO L158 Benchmark]: Witness Printer took 58.77ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 72.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:47:39,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.83ms. Allocated memory is still 104.9MB. Free memory was 62.1MB in the beginning and 78.0MB in the end (delta: -15.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.35ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.69ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 691.93ms. Allocated memory is still 104.9MB. Free memory was 74.5MB in the beginning and 57.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15320.57ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 58.77ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 72.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9s, 173 PlacesBefore, 41 PlacesAfterwards, 175 TransitionsBefore, 35 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 91 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 179 TotalNumberOfCompositions, 3387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3009, independent: 2970, independent conditional: 0, independent unconditional: 2970, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1791, independent: 1775, independent conditional: 0, independent unconditional: 1775, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1791, independent: 1775, independent conditional: 0, independent unconditional: 1775, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3009, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1791, unknown conditional: 0, unknown unconditional: 1791] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1135 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1135 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1404 IncrementalHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 65 mSDtfsCounter, 1404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=10, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 3923 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 145 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1069 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 38/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 07:47:39,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5933c2-5e78-4b73-83b1-3cee3b2770a4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE