./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:00:15,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:00:15,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:00:15,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:00:15,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:00:15,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:00:15,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:00:15,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:00:15,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:00:15,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:00:15,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:00:15,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:00:15,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:00:15,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:00:15,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:00:15,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:00:15,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:00:15,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:00:15,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:00:15,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:00:15,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:00:15,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:00:15,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:00:15,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:00:15,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:00:15,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:00:15,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:00:15,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:00:15,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:00:15,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:00:15,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:00:15,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:00:15,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:00:15,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:00:15,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:00:15,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:00:15,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:00:15,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:00:15,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:00:15,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:00:15,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:00:15,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:00:15,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:00:15,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:00:15,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:00:15,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:00:15,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:00:15,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:00:15,790 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:00:15,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:00:15,790 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:00:15,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:00:15,791 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:00:15,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:00:15,792 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:00:15,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:00:15,792 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:00:15,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:00:15,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:00:15,793 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:00:15,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:00:15,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:00:15,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:00:15,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:00:15,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:00:15,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:00:15,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:00:15,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:00:15,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:00:15,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:00:15,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:00:15,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:00:15,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:00:15,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:00:15,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:00:15,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:00:15,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:15,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:00:15,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:00:15,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:00:15,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:00:15,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:00:15,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:00:15,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:00:15,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:00:15,810 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_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-11-03 02:00:16,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:00:16,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:00:16,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:00:16,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:00:16,158 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:00:16,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread/lazy01.i [2022-11-03 02:00:16,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/data/453f32c92/f3c70a5b8d914da694f4b35d004886a6/FLAGed76e1665 [2022-11-03 02:00:16,908 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:00:16,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/sv-benchmarks/c/pthread/lazy01.i [2022-11-03 02:00:16,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/data/453f32c92/f3c70a5b8d914da694f4b35d004886a6/FLAGed76e1665 [2022-11-03 02:00:17,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/data/453f32c92/f3c70a5b8d914da694f4b35d004886a6 [2022-11-03 02:00:17,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:00:17,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:00:17,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:17,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:00:17,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:00:17,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47864e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17, skipping insertion in model container [2022-11-03 02:00:17,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:00:17,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:00:17,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-03 02:00:17,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:17,680 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:00:17,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-03 02:00:17,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:17,778 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:00:17,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17 WrapperNode [2022-11-03 02:00:17,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:17,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:17,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:00:17,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:00:17,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,861 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-11-03 02:00:17,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:17,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:00:17,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:00:17,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:00:17,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:00:17,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:00:17,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:00:17,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:00:17,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (1/1) ... [2022-11-03 02:00:17,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:17,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:00:17,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:00:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:00:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 02:00:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 02:00:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 02:00:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 02:00:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 02:00:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 02:00:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:00:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:00:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:00:18,020 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:00:18,216 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:00:18,218 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:00:18,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:00:18,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:00:18,527 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:00:18,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:18 BoogieIcfgContainer [2022-11-03 02:00:18,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:00:18,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:00:18,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:00:18,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:00:18,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:00:17" (1/3) ... [2022-11-03 02:00:18,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8401e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:18, skipping insertion in model container [2022-11-03 02:00:18,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:17" (2/3) ... [2022-11-03 02:00:18,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8401e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:18, skipping insertion in model container [2022-11-03 02:00:18,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:18" (3/3) ... [2022-11-03 02:00:18,539 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-11-03 02:00:18,549 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:00:18,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:00:18,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 02:00:18,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:00:18,638 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 02:00:18,681 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:00:18,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 98 transitions, 220 flow [2022-11-03 02:00:18,705 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 98 transitions, 220 flow [2022-11-03 02:00:18,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 98 transitions, 220 flow [2022-11-03 02:00:18,765 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2022-11-03 02:00:18,766 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 02:00:18,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 1/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-03 02:00:18,772 INFO L118 LiptonReduction]: Number of co-enabled transitions 1600 [2022-11-03 02:00:22,631 INFO L133 LiptonReduction]: Checked pairs total: 4124 [2022-11-03 02:00:22,632 INFO L135 LiptonReduction]: Total number of compositions: 77 [2022-11-03 02:00:22,648 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 32 transitions, 88 flow [2022-11-03 02:00:22,720 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 514 states, 503 states have (on average 3.081510934393638) internal successors, (1550), 513 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:22,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:00:22,748 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;@2fd0f42d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:00:22,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-03 02:00:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 503 states have (on average 3.081510934393638) internal successors, (1550), 513 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 02:00:22,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:22,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 02:00:22,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-03 02:00:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 340960, now seen corresponding path program 1 times [2022-11-03 02:00:22,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435336642] [2022-11-03 02:00:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:23,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:23,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435336642] [2022-11-03 02:00:23,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435336642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:23,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:23,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:00:23,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557778292] [2022-11-03 02:00:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:23,111 INFO L87 Difference]: Start difference. First operand has 514 states, 503 states have (on average 3.081510934393638) internal successors, (1550), 513 states have internal predecessors, (1550), 0 states have call successors, (0), 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 1.5) 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) [2022-11-03 02:00:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:23,252 INFO L93 Difference]: Finished difference Result 350 states and 930 transitions. [2022-11-03 02:00:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:23,255 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 3 [2022-11-03 02:00:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:23,275 INFO L225 Difference]: With dead ends: 350 [2022-11-03 02:00:23,276 INFO L226 Difference]: Without dead ends: 284 [2022-11-03 02:00:23,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:23,282 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:23,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:00:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-03 02:00:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-03 02:00:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 2.6) internal successors, (728), 283 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 728 transitions. [2022-11-03 02:00:23,363 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 728 transitions. Word has length 3 [2022-11-03 02:00:23,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:23,364 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 728 transitions. [2022-11-03 02:00:23,364 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) [2022-11-03 02:00:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 728 transitions. [2022-11-03 02:00:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:00:23,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:23,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:23,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:00:23,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-03 02:00:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1619266107, now seen corresponding path program 1 times [2022-11-03 02:00:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:23,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719968130] [2022-11-03 02:00:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:23,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:23,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719968130] [2022-11-03 02:00:23,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719968130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:23,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:23,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25619694] [2022-11-03 02:00:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:00:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:00:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:00:23,595 INFO L87 Difference]: Start difference. First operand 284 states and 728 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-03 02:00:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:23,766 INFO L93 Difference]: Finished difference Result 236 states and 598 transitions. [2022-11-03 02:00:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:00:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-11-03 02:00:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:23,768 INFO L225 Difference]: With dead ends: 236 [2022-11-03 02:00:23,769 INFO L226 Difference]: Without dead ends: 236 [2022-11-03 02:00:23,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:00:23,771 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:23,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:00:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-03 02:00:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-03 02:00:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 2.5555555555555554) internal successors, (598), 235 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 598 transitions. [2022-11-03 02:00:23,791 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 598 transitions. Word has length 8 [2022-11-03 02:00:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 598 transitions. [2022-11-03 02:00:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-03 02:00:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 598 transitions. [2022-11-03 02:00:23,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:00:23,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:23,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:00:23,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-03 02:00:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1342357677, now seen corresponding path program 1 times [2022-11-03 02:00:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:23,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915670137] [2022-11-03 02:00:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:23,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915670137] [2022-11-03 02:00:23,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915670137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:23,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:23,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762592569] [2022-11-03 02:00:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:23,929 INFO L87 Difference]: Start difference. First operand 236 states and 598 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:23,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:23,974 INFO L93 Difference]: Finished difference Result 118 states and 198 transitions. [2022-11-03 02:00:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 02:00:23,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:23,976 INFO L225 Difference]: With dead ends: 118 [2022-11-03 02:00:23,976 INFO L226 Difference]: Without dead ends: 118 [2022-11-03 02:00:23,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:23,978 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:23,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:00:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-03 02:00:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-03 02:00:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.736842105263158) internal successors, (198), 117 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 198 transitions. [2022-11-03 02:00:23,984 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 198 transitions. Word has length 9 [2022-11-03 02:00:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:23,985 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 198 transitions. [2022-11-03 02:00:23,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 198 transitions. [2022-11-03 02:00:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:00:23,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:23,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:23,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:00:23,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-03 02:00:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1334806968, now seen corresponding path program 1 times [2022-11-03 02:00:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:23,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130948475] [2022-11-03 02:00:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:24,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130948475] [2022-11-03 02:00:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130948475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:24,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:24,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357640221] [2022-11-03 02:00:24,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:24,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:00:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:00:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:00:24,084 INFO L87 Difference]: Start difference. First operand 118 states and 198 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:24,180 INFO L93 Difference]: Finished difference Result 108 states and 180 transitions. [2022-11-03 02:00:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:00:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:00:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:24,181 INFO L225 Difference]: With dead ends: 108 [2022-11-03 02:00:24,181 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 02:00:24,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:00:24,182 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:24,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:00:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 02:00:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-03 02:00:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 53 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 84 transitions. [2022-11-03 02:00:24,187 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 84 transitions. Word has length 10 [2022-11-03 02:00:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:24,187 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 84 transitions. [2022-11-03 02:00:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 84 transitions. [2022-11-03 02:00:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:00:24,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:24,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:24,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:00:24,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-03 02:00:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1205527045, now seen corresponding path program 1 times [2022-11-03 02:00:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:24,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433804310] [2022-11-03 02:00:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:24,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:24,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433804310] [2022-11-03 02:00:24,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433804310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:24,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:24,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:00:24,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438631431] [2022-11-03 02:00:24,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:24,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:00:24,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:00:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:00:24,259 INFO L87 Difference]: Start difference. First operand 54 states and 84 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:24,287 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2022-11-03 02:00:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:00:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:00:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:24,288 INFO L225 Difference]: With dead ends: 48 [2022-11-03 02:00:24,289 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:00:24,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:00:24,290 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:24,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:00:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:00:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:00:24,291 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) [2022-11-03 02:00:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:00:24,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-03 02:00:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:24,292 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:00:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:00:24,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:00:24,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2022-11-03 02:00:24,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-03 02:00:24,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-03 02:00:24,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-03 02:00:24,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2022-11-03 02:00:24,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2022-11-03 02:00:24,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-11-03 02:00:24,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-03 02:00:24,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-03 02:00:24,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-03 02:00:24,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-03 02:00:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:00:24,300 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-03 02:00:24,305 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 02:00:24,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:00:24,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:00:24 BasicIcfg [2022-11-03 02:00:24,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:00:24,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:00:24,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:00:24,323 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:00:24,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:18" (3/4) ... [2022-11-03 02:00:24,326 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:00:24,332 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 02:00:24,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 02:00:24,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-03 02:00:24,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-03 02:00:24,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 02:00:24,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:00:24,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:00:24,367 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:00:24,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:00:24,368 INFO L158 Benchmark]: Toolchain (without parser) took 7201.38ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 80.0MB in the beginning and 124.6MB in the end (delta: -44.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:00:24,369 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:00:24,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.14ms. Allocated memory is still 125.8MB. Free memory was 79.8MB in the beginning and 89.8MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.68ms. Allocated memory is still 125.8MB. Free memory was 89.8MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,370 INFO L158 Benchmark]: Boogie Preprocessor took 46.99ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,370 INFO L158 Benchmark]: RCFGBuilder took 618.95ms. Allocated memory is still 125.8MB. Free memory was 86.3MB in the beginning and 72.1MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,370 INFO L158 Benchmark]: TraceAbstraction took 5776.82ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 71.3MB in the beginning and 42.6MB in the end (delta: 28.6MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,371 INFO L158 Benchmark]: Witness Printer took 45.00ms. Allocated memory is still 153.1MB. Free memory was 126.7MB in the beginning and 124.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:00:24,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.14ms. Allocated memory is still 125.8MB. Free memory was 79.8MB in the beginning and 89.8MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.68ms. Allocated memory is still 125.8MB. Free memory was 89.8MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.99ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.95ms. Allocated memory is still 125.8MB. Free memory was 86.3MB in the beginning and 72.1MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5776.82ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 71.3MB in the beginning and 42.6MB in the end (delta: 28.6MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * Witness Printer took 45.00ms. Allocated memory is still 153.1MB. Free memory was 126.7MB in the beginning and 124.6MB in the end (delta: 2.1MB). 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: 3.9s, 107 PlacesBefore, 41 PlacesAfterwards, 98 TransitionsBefore, 32 TransitionsAfterwards, 1600 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 77 TotalNumberOfCompositions, 4124 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2515, positive: 2377, positive conditional: 0, positive unconditional: 2377, negative: 138, negative conditional: 0, negative unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1204, positive: 1167, positive conditional: 0, positive unconditional: 1167, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1204, positive: 1142, positive conditional: 0, positive unconditional: 1142, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 177, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2515, positive: 1210, positive conditional: 0, positive unconditional: 1210, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 1204, unknown conditional: 0, unknown unconditional: 1204] , Statistics on independence cache: Total cache size (in pairs): 182, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: 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, 137 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 1 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=514occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 02:00:24,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aab597c-1e11-472a-966a-14aa5cce5d22/bin/utaipan-7li7fVZpFI/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