./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9 --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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- 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-6b4ec56 [2022-11-20 20:53:33,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:53:33,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:53:33,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:53:33,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:53:33,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:53:33,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:53:33,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:53:33,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:53:33,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:53:33,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:53:33,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:53:33,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:53:33,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:53:33,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:53:33,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:53:33,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:53:33,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:53:33,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:53:33,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:53:33,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:53:33,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:53:33,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:53:33,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:53:33,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:53:33,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:53:33,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:53:33,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:53:33,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:53:33,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:53:33,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:53:33,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:53:33,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:53:33,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:53:33,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:53:33,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:53:33,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:53:33,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:53:33,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:53:33,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:53:33,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:53:33,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-20 20:53:33,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:53:33,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:53:33,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:53:33,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:53:33,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:53:33,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:53:33,839 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:53:33,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:53:33,840 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:53:33,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:53:33,841 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:53:33,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:53:33,842 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:53:33,842 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:53:33,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:53:33,843 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:53:33,843 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:53:33,843 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:53:33,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:53:33,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:53:33,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:53:33,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:53:33,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:53:33,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:53:33,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:53:33,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:53:33,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:53:33,847 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 20:53:33,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:53:33,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:53:33,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:53:33,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:53:33,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:53:33,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:53:33,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:53:33,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:53:33,849 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:53:33,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:53:33,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:53:33,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:53:33,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:53:33,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:53:33,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:53:33,851 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_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2022-11-20 20:53:34,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:53:34,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:53:34,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:53:34,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:53:34,201 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:53:34,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2022-11-20 20:53:37,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:53:37,853 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:53:37,860 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2022-11-20 20:53:37,878 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/data/7c21f48b4/206581ba80de48f89753afea2fb191f1/FLAGdb2f824ca [2022-11-20 20:53:37,893 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/data/7c21f48b4/206581ba80de48f89753afea2fb191f1 [2022-11-20 20:53:37,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:53:37,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:53:37,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:53:37,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:53:37,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:53:37,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:53:37" (1/1) ... [2022-11-20 20:53:37,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b733f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:37, skipping insertion in model container [2022-11-20 20:53:37,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:53:37" (1/1) ... [2022-11-20 20:53:37,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:53:37,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:53:38,167 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2022-11-20 20:53:38,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:53:38,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:53:38,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2022-11-20 20:53:38,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:53:38,817 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:53:38,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38 WrapperNode [2022-11-20 20:53:38,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:53:38,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:53:38,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:53:38,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:53:38,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,913 INFO L138 Inliner]: procedures = 177, calls = 91, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 181 [2022-11-20 20:53:38,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:53:38,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:53:38,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:53:38,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:53:38,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:38,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:39,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:53:39,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:53:39,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:53:39,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:53:39,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (1/1) ... [2022-11-20 20:53:39,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:53:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:53:39,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:53:39,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:53:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:53:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:53:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 20:53:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:53:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:53:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:53:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 20:53:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 20:53:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 20:53:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 20:53:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 20:53:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 20:53:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 20:53:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 20:53:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:53:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 20:53:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:53:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:53:39,105 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:53:39,274 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:53:39,277 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:53:39,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:53:40,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:53:40,483 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:53:40,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:53:40 BoogieIcfgContainer [2022-11-20 20:53:40,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:53:40,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:53:40,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:53:40,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:53:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:53:37" (1/3) ... [2022-11-20 20:53:40,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4c419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:53:40, skipping insertion in model container [2022-11-20 20:53:40,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:38" (2/3) ... [2022-11-20 20:53:40,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4c419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:53:40, skipping insertion in model container [2022-11-20 20:53:40,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:53:40" (3/3) ... [2022-11-20 20:53:40,497 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2022-11-20 20:53:40,507 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 20:53:40,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:53:40,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 20:53:40,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:53:40,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 20:53:40,672 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:53:40,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 158 transitions, 336 flow [2022-11-20 20:53:40,697 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 158 transitions, 336 flow [2022-11-20 20:53:40,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 158 transitions, 336 flow [2022-11-20 20:53:40,766 INFO L130 PetriNetUnfolder]: 2/154 cut-off events. [2022-11-20 20:53:40,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 20:53:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 154 events. 2/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-11-20 20:53:40,776 INFO L119 LiptonReduction]: Number of co-enabled transitions 3906 [2022-11-20 20:54:02,641 INFO L134 LiptonReduction]: Checked pairs total: 14530 [2022-11-20 20:54:02,641 INFO L136 LiptonReduction]: Total number of compositions: 134 [2022-11-20 20:54:02,651 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 37 transitions, 94 flow [2022-11-20 20:54:03,134 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7740 states, 7660 states have (on average 4.10822454308094) internal successors, (31469), 7739 states have internal predecessors, (31469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:03,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:54:03,172 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;@4062ca8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:54:03,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 20:54:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 7740 states, 7660 states have (on average 4.10822454308094) internal successors, (31469), 7739 states have internal predecessors, (31469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:54:03,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:03,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:54:03,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 20:54:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash 966398129, now seen corresponding path program 1 times [2022-11-20 20:54:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97214217] [2022-11-20 20:54:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:03,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:03,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97214217] [2022-11-20 20:54:03,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97214217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:03,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:03,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:54:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274483485] [2022-11-20 20:54:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:03,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:03,777 INFO L87 Difference]: Start difference. First operand has 7740 states, 7660 states have (on average 4.10822454308094) internal successors, (31469), 7739 states have internal predecessors, (31469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:04,024 INFO L93 Difference]: Finished difference Result 4030 states and 15871 transitions. [2022-11-20 20:54:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 20:54:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:04,109 INFO L225 Difference]: With dead ends: 4030 [2022-11-20 20:54:04,110 INFO L226 Difference]: Without dead ends: 4030 [2022-11-20 20:54:04,111 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 [2022-11-20 20:54:04,118 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:04,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:54:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-11-20 20:54:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 4030. [2022-11-20 20:54:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4015 states have (on average 3.952926525529265) internal successors, (15871), 4029 states have internal predecessors, (15871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 15871 transitions. [2022-11-20 20:54:04,498 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 15871 transitions. Word has length 5 [2022-11-20 20:54:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:04,499 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 15871 transitions. [2022-11-20 20:54:04,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 15871 transitions. [2022-11-20 20:54:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:54:04,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:04,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:54:04,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:54:04,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 20:54:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -106431047, now seen corresponding path program 1 times [2022-11-20 20:54:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146559470] [2022-11-20 20:54:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:04,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146559470] [2022-11-20 20:54:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146559470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:04,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:04,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:54:04,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803969023] [2022-11-20 20:54:04,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:04,675 INFO L87 Difference]: Start difference. First operand 4030 states and 15871 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:04,964 INFO L93 Difference]: Finished difference Result 2884 states and 10539 transitions. [2022-11-20 20:54:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 20:54:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:04,992 INFO L225 Difference]: With dead ends: 2884 [2022-11-20 20:54:04,993 INFO L226 Difference]: Without dead ends: 2884 [2022-11-20 20:54:04,994 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 [2022-11-20 20:54:04,996 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:04,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:54:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-11-20 20:54:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2022-11-20 20:54:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2870 states have (on average 3.6721254355400696) internal successors, (10539), 2883 states have internal predecessors, (10539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 10539 transitions. [2022-11-20 20:54:05,117 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 10539 transitions. Word has length 6 [2022-11-20 20:54:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 2884 states and 10539 transitions. [2022-11-20 20:54:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 10539 transitions. [2022-11-20 20:54:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:54:05,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:05,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:54:05,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 20:54:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 621569853, now seen corresponding path program 1 times [2022-11-20 20:54:05,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627776755] [2022-11-20 20:54:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:05,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:05,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627776755] [2022-11-20 20:54:05,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627776755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:05,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:05,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:54:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161581862] [2022-11-20 20:54:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:05,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:54:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:54:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:54:05,300 INFO L87 Difference]: Start difference. First operand 2884 states and 10539 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:05,527 INFO L93 Difference]: Finished difference Result 2062 states and 7501 transitions. [2022-11-20 20:54:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:54:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 20:54:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:05,542 INFO L225 Difference]: With dead ends: 2062 [2022-11-20 20:54:05,542 INFO L226 Difference]: Without dead ends: 2062 [2022-11-20 20:54:05,543 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 [2022-11-20 20:54:05,546 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:05,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 10 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:54:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-11-20 20:54:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2062. [2022-11-20 20:54:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2052 states have (on average 3.655458089668616) internal successors, (7501), 2061 states have internal predecessors, (7501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7501 transitions. [2022-11-20 20:54:05,623 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7501 transitions. Word has length 11 [2022-11-20 20:54:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:05,623 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 7501 transitions. [2022-11-20 20:54:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7501 transitions. [2022-11-20 20:54:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:54:05,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:05,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:05,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:54:05,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 20:54:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash -811544768, now seen corresponding path program 1 times [2022-11-20 20:54:05,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:05,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549651743] [2022-11-20 20:54:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:05,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:05,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549651743] [2022-11-20 20:54:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549651743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:05,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:05,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200536970] [2022-11-20 20:54:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:54:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:54:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:54:05,945 INFO L87 Difference]: Start difference. First operand 2062 states and 7501 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:06,191 INFO L93 Difference]: Finished difference Result 1864 states and 6961 transitions. [2022-11-20 20:54:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:54:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-11-20 20:54:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:06,206 INFO L225 Difference]: With dead ends: 1864 [2022-11-20 20:54:06,206 INFO L226 Difference]: Without dead ends: 1864 [2022-11-20 20:54:06,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:54:06,208 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:06,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 12 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:54:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-20 20:54:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2022-11-20 20:54:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1860 states have (on average 3.74247311827957) internal successors, (6961), 1863 states have internal predecessors, (6961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 6961 transitions. [2022-11-20 20:54:06,275 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 6961 transitions. Word has length 17 [2022-11-20 20:54:06,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:06,277 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 6961 transitions. [2022-11-20 20:54:06,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 6961 transitions. [2022-11-20 20:54:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 20:54:06,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:06,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:06,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:54:06,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 20:54:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2135097784, now seen corresponding path program 1 times [2022-11-20 20:54:06,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:06,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211709957] [2022-11-20 20:54:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:06,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:06,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:06,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211709957] [2022-11-20 20:54:06,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211709957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:06,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:06,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:54:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281203699] [2022-11-20 20:54:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:54:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:54:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:54:06,536 INFO L87 Difference]: Start difference. First operand 1864 states and 6961 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:06,854 INFO L93 Difference]: Finished difference Result 1848 states and 6933 transitions. [2022-11-20 20:54:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:54:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 20:54:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:06,855 INFO L225 Difference]: With dead ends: 1848 [2022-11-20 20:54:06,855 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:54:06,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:54:06,856 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 121 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:06,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 8 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:54:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:54:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:54:06,858 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) [2022-11-20 20:54:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:54:06,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-11-20 20:54:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:06,858 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:54:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:54:06,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2022-11-20 20:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2022-11-20 20:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2022-11-20 20:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2022-11-20 20:54:06,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2022-11-20 20:54:06,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2022-11-20 20:54:06,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2022-11-20 20:54:06,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2022-11-20 20:54:06,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2022-11-20 20:54:06,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2022-11-20 20:54:06,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2022-11-20 20:54:06,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2022-11-20 20:54:06,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2022-11-20 20:54:06,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2022-11-20 20:54:06,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2022-11-20 20:54:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:54:06,871 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 20:54:06,877 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 20:54:06,877 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:54:06,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:54:06 BasicIcfg [2022-11-20 20:54:06,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:54:06,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:54:06,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:54:06,883 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:54:06,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:53:40" (3/4) ... [2022-11-20 20:54:06,887 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:54:06,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 20:54:06,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 20:54:06,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-20 20:54:06,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-20 20:54:06,903 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2022-11-20 20:54:06,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 20:54:06,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 20:54:06,905 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:54:06,957 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:54:06,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:54:06,958 INFO L158 Benchmark]: Toolchain (without parser) took 29061.09ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 142.3MB in the beginning and 192.3MB in the end (delta: -50.0MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,958 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:54:06,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 920.47ms. Allocated memory is still 176.2MB. Free memory was 142.3MB in the beginning and 116.4MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.48ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 113.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,959 INFO L158 Benchmark]: Boogie Preprocessor took 80.11ms. Allocated memory is still 176.2MB. Free memory was 113.2MB in the beginning and 110.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,959 INFO L158 Benchmark]: RCFGBuilder took 1484.55ms. Allocated memory is still 176.2MB. Free memory was 110.1MB in the beginning and 100.4MB in the end (delta: 9.7MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,960 INFO L158 Benchmark]: TraceAbstraction took 26392.81ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 100.4MB in the beginning and 196.5MB in the end (delta: -96.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,960 INFO L158 Benchmark]: Witness Printer took 74.22ms. Allocated memory is still 276.8MB. Free memory was 196.5MB in the beginning and 192.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:54:06,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 920.47ms. Allocated memory is still 176.2MB. Free memory was 142.3MB in the beginning and 116.4MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.48ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 113.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.11ms. Allocated memory is still 176.2MB. Free memory was 113.2MB in the beginning and 110.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1484.55ms. Allocated memory is still 176.2MB. Free memory was 110.1MB in the beginning and 100.4MB in the end (delta: 9.7MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26392.81ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 100.4MB in the beginning and 196.5MB in the end (delta: -96.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 74.22ms. Allocated memory is still 276.8MB. Free memory was 196.5MB in the beginning and 192.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.9s, 169 PlacesBefore, 50 PlacesAfterwards, 158 TransitionsBefore, 37 TransitionsAfterwards, 3906 CoEnabledTransitionPairs, 8 FixpointIterations, 63 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 134 TotalNumberOfCompositions, 14530 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4421, independent: 4020, independent conditional: 0, independent unconditional: 4020, dependent: 401, dependent conditional: 0, dependent unconditional: 401, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2514, independent: 2428, independent conditional: 0, independent unconditional: 2428, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2514, independent: 2375, independent conditional: 0, independent unconditional: 2375, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 139, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1518, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 1424, dependent conditional: 0, dependent unconditional: 1424, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4421, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 2514, unknown conditional: 0, unknown unconditional: 2514] , Statistics on independence cache: Total cache size (in pairs): 215, Positive cache size: 183, Positive conditional cache size: 0, Positive unconditional cache size: 183, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, 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: 776]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 776]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 829]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 829]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 846]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 846]: 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 9 procedures, 199 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 26.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 310 IncrementalHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 22 mSDtfsCounter, 310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7740occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 20:54:06,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61758e1-2eb0-4d6b-ac7c-64c4bd2a4570/bin/utaipan-6cKwYrpEi9/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