./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW --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 e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 --- 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-4e7fbc6 [2022-11-23 13:43:06,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:43:06,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:43:06,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:43:06,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:43:06,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:43:06,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:43:06,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:43:06,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:43:06,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:43:06,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:43:06,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:43:06,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:43:06,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:43:06,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:43:06,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:43:06,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:43:06,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:43:06,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:43:06,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:43:06,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:43:06,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:43:06,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:43:06,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:43:06,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:43:06,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:43:06,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:43:06,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:43:06,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:43:06,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:43:06,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:43:06,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:43:06,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:43:06,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:43:06,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:43:06,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:43:06,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:43:06,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:43:06,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:43:06,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:43:06,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:43:06,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:43:07,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:43:07,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:43:07,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:43:07,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:43:07,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:43:07,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:43:07,041 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:43:07,042 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:43:07,042 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:43:07,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:43:07,043 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:43:07,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:43:07,044 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:43:07,044 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:43:07,044 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:43:07,044 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:43:07,045 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:43:07,045 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:43:07,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:43:07,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:43:07,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:43:07,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:43:07,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:43:07,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:43:07,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:43:07,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:43:07,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:43:07,048 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:43:07,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:43:07,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:43:07,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:43:07,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:43:07,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:43:07,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:43:07,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:43:07,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:43:07,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:43:07,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:43:07,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:43:07,052 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:43:07,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:43:07,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:43:07,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:43:07,053 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_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 [2022-11-23 13:43:07,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:43:07,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:43:07,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:43:07,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:43:07,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:43:07,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2022-11-23 13:43:10,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:43:10,629 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:43:10,630 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2022-11-23 13:43:10,652 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/data/8ac047360/660cd1693bc04670b690a284fc876b4b/FLAG5d3dbb565 [2022-11-23 13:43:10,671 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/data/8ac047360/660cd1693bc04670b690a284fc876b4b [2022-11-23 13:43:10,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:43:10,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:43:10,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:43:10,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:43:10,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:43:10,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:10" (1/1) ... [2022-11-23 13:43:10,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4735482a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:10, skipping insertion in model container [2022-11-23 13:43:10,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:10" (1/1) ... [2022-11-23 13:43:10,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:43:10,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:43:10,912 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_ceda5244-2fb4-42df-9b9c-ef355b48db08/sv-benchmarks/c/pthread-wmm/thin002_power.opt.i[951,964] [2022-11-23 13:43:11,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:43:11,229 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:43:11,241 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_ceda5244-2fb4-42df-9b9c-ef355b48db08/sv-benchmarks/c/pthread-wmm/thin002_power.opt.i[951,964] [2022-11-23 13:43:11,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:43:11,330 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:43:11,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11 WrapperNode [2022-11-23 13:43:11,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:43:11,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:43:11,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:43:11,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:43:11,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,420 INFO L138 Inliner]: procedures = 177, calls = 84, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 201 [2022-11-23 13:43:11,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:43:11,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:43:11,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:43:11,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:43:11,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:43:11,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:43:11,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:43:11,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:43:11,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (1/1) ... [2022-11-23 13:43:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:43:11,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:43:11,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:43:11,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:43:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:43:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:43:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:43:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:43:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:43:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:43:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 13:43:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 13:43:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 13:43:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 13:43:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 13:43:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 13:43:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-23 13:43:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-23 13:43:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:43:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:43:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:43:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:43:11,583 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:43:11,794 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:43:11,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:43:12,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:43:12,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:43:12,668 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:43:12,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:12 BoogieIcfgContainer [2022-11-23 13:43:12,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:43:12,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:43:12,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:43:12,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:43:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:43:10" (1/3) ... [2022-11-23 13:43:12,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:12, skipping insertion in model container [2022-11-23 13:43:12,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:11" (2/3) ... [2022-11-23 13:43:12,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:12, skipping insertion in model container [2022-11-23 13:43:12,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:12" (3/3) ... [2022-11-23 13:43:12,683 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.opt.i [2022-11-23 13:43:12,692 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 13:43:12,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:43:12,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 13:43:12,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:43:12,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 13:43:12,851 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:43:12,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 162 transitions, 344 flow [2022-11-23 13:43:12,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 162 transitions, 344 flow [2022-11-23 13:43:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 162 transitions, 344 flow [2022-11-23 13:43:13,032 INFO L130 PetriNetUnfolder]: 2/158 cut-off events. [2022-11-23 13:43:13,034 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 13:43:13,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 2/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-11-23 13:43:13,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2022-11-23 13:43:25,611 INFO L134 LiptonReduction]: Checked pairs total: 14078 [2022-11-23 13:43:25,611 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-23 13:43:25,624 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 38 transitions, 96 flow [2022-11-23 13:43:26,011 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7642 states, 7562 states have (on average 4.348585030415234) internal successors, (32884), 7641 states have internal predecessors, (32884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:26,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:43:26,046 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;@39b3eba1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:43:26,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-23 13:43:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 7642 states, 7562 states have (on average 4.348585030415234) internal successors, (32884), 7641 states have internal predecessors, (32884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:43:26,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:43:26,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:43:26,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 13:43:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:43:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash 28089775, now seen corresponding path program 1 times [2022-11-23 13:43:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:43:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550788751] [2022-11-23 13:43:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:43:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:43:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:43:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:43:26,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:43:26,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550788751] [2022-11-23 13:43:26,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550788751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:43:26,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:43:26,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:43:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841159684] [2022-11-23 13:43:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:43:26,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:43:26,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:43:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:43:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:43:26,502 INFO L87 Difference]: Start difference. First operand has 7642 states, 7562 states have (on average 4.348585030415234) internal successors, (32884), 7641 states have internal predecessors, (32884), 0 states have call successors, (0), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:43:26,763 INFO L93 Difference]: Finished difference Result 4354 states and 15741 transitions. [2022-11-23 13:43:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:43:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-23 13:43:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:43:26,826 INFO L225 Difference]: With dead ends: 4354 [2022-11-23 13:43:26,827 INFO L226 Difference]: Without dead ends: 4354 [2022-11-23 13:43:26,827 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 [2022-11-23 13:43:26,832 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:43:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:43:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2022-11-23 13:43:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 4354. [2022-11-23 13:43:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4290 states have (on average 3.669230769230769) internal successors, (15741), 4353 states have internal predecessors, (15741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 15741 transitions. [2022-11-23 13:43:27,248 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 15741 transitions. Word has length 4 [2022-11-23 13:43:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:43:27,248 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 15741 transitions. [2022-11-23 13:43:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 15741 transitions. [2022-11-23 13:43:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:43:27,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:43:27,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:43:27,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:43:27,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 13:43:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:43:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 181659298, now seen corresponding path program 1 times [2022-11-23 13:43:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:43:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463383890] [2022-11-23 13:43:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:43:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:43:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:43:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:43:27,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:43:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463383890] [2022-11-23 13:43:27,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463383890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:43:27,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:43:27,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:43:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299588556] [2022-11-23 13:43:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:43:27,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:43:27,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:43:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:43:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:43:27,337 INFO L87 Difference]: Start difference. First operand 4354 states and 15741 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:43:27,571 INFO L93 Difference]: Finished difference Result 2830 states and 10359 transitions. [2022-11-23 13:43:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:43:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 13:43:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:43:27,593 INFO L225 Difference]: With dead ends: 2830 [2022-11-23 13:43:27,593 INFO L226 Difference]: Without dead ends: 2830 [2022-11-23 13:43:27,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:43:27,595 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:43:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:43:27,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2022-11-23 13:43:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2830. [2022-11-23 13:43:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2816 states have (on average 3.678622159090909) internal successors, (10359), 2829 states have internal predecessors, (10359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 10359 transitions. [2022-11-23 13:43:27,704 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 10359 transitions. Word has length 9 [2022-11-23 13:43:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:43:27,704 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 10359 transitions. [2022-11-23 13:43:27,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 10359 transitions. [2022-11-23 13:43:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 13:43:27,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:43:27,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:43:27,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:43:27,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 13:43:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:43:27,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1336350413, now seen corresponding path program 1 times [2022-11-23 13:43:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:43:27,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276930983] [2022-11-23 13:43:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:43:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:43:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:43:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:43:27,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:43:27,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276930983] [2022-11-23 13:43:27,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276930983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:43:27,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:43:27,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:43:27,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360501949] [2022-11-23 13:43:27,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:43:27,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:43:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:43:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:43:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:43:27,790 INFO L87 Difference]: Start difference. First operand 2830 states and 10359 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) [2022-11-23 13:43:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:43:28,005 INFO L93 Difference]: Finished difference Result 2012 states and 7333 transitions. [2022-11-23 13:43:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:43:28,006 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 [2022-11-23 13:43:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:43:28,019 INFO L225 Difference]: With dead ends: 2012 [2022-11-23 13:43:28,019 INFO L226 Difference]: Without dead ends: 2012 [2022-11-23 13:43:28,020 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 [2022-11-23 13:43:28,021 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:43:28,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 9 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:43:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2022-11-23 13:43:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 2012. [2022-11-23 13:43:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2002 states have (on average 3.662837162837163) internal successors, (7333), 2011 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 7333 transitions. [2022-11-23 13:43:28,093 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 7333 transitions. Word has length 10 [2022-11-23 13:43:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:43:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 2012 states and 7333 transitions. [2022-11-23 13:43:28,094 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) [2022-11-23 13:43:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 7333 transitions. [2022-11-23 13:43:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 13:43:28,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:43:28,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:43:28,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:43:28,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 13:43:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:43:28,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2134771881, now seen corresponding path program 1 times [2022-11-23 13:43:28,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:43:28,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953021165] [2022-11-23 13:43:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:43:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:43:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:43:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:43:28,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:43:28,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953021165] [2022-11-23 13:43:28,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953021165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:43:28,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:43:28,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:43:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939747911] [2022-11-23 13:43:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:43:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:43:28,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:43:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:43:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:43:28,326 INFO L87 Difference]: Start difference. First operand 2012 states and 7333 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:43:28,522 INFO L93 Difference]: Finished difference Result 1814 states and 6793 transitions. [2022-11-23 13:43:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:43:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-23 13:43:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:43:28,535 INFO L225 Difference]: With dead ends: 1814 [2022-11-23 13:43:28,535 INFO L226 Difference]: Without dead ends: 1814 [2022-11-23 13:43:28,536 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 [2022-11-23 13:43:28,537 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 64 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 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 [2022-11-23 13:43:28,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 12 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:43:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-11-23 13:43:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1814. [2022-11-23 13:43:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1810 states have (on average 3.7530386740331494) internal successors, (6793), 1813 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 6793 transitions. [2022-11-23 13:43:28,598 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 6793 transitions. Word has length 16 [2022-11-23 13:43:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:43:28,599 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 6793 transitions. [2022-11-23 13:43:28,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:43:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 6793 transitions. [2022-11-23 13:43:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 13:43:28,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:43:28,606 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] [2022-11-23 13:43:28,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:43:28,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 13:43:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:43:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 228688813, now seen corresponding path program 1 times [2022-11-23 13:43:28,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:43:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558992276] [2022-11-23 13:43:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:43:28,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:43:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:43:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:43:28,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:43:28,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558992276] [2022-11-23 13:43:28,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558992276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:43:28,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:43:28,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:43:28,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964676177] [2022-11-23 13:43:28,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:43:28,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:43:28,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:43:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:43:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:43:28,896 INFO L87 Difference]: Start difference. First operand 1814 states and 6793 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) [2022-11-23 13:43:29,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:43:29,093 INFO L93 Difference]: Finished difference Result 1798 states and 6765 transitions. [2022-11-23 13:43:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:43:29,094 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 [2022-11-23 13:43:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:43:29,094 INFO L225 Difference]: With dead ends: 1798 [2022-11-23 13:43:29,094 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 13:43:29,095 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 [2022-11-23 13:43:29,095 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 103 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:43:29,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 12 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:43:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 13:43:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 13:43:29,097 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) [2022-11-23 13:43:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 13:43:29,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-11-23 13:43:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:43:29,097 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 13:43:29,097 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) [2022-11-23 13:43:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 13:43:29,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 13:43:29,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2022-11-23 13:43:29,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2022-11-23 13:43:29,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2022-11-23 13:43:29,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2022-11-23 13:43:29,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2022-11-23 13:43:29,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2022-11-23 13:43:29,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2022-11-23 13:43:29,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2022-11-23 13:43:29,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2022-11-23 13:43:29,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2022-11-23 13:43:29,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2022-11-23 13:43:29,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2022-11-23 13:43:29,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2022-11-23 13:43:29,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2022-11-23 13:43:29,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2022-11-23 13:43:29,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2022-11-23 13:43:29,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2022-11-23 13:43:29,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2022-11-23 13:43:29,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2022-11-23 13:43:29,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2022-11-23 13:43:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:43:29,108 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 13:43:29,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 13:43:29,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:43:29,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:43:29 BasicIcfg [2022-11-23 13:43:29,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:43:29,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:43:29,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:43:29,117 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:43:29,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:12" (3/4) ... [2022-11-23 13:43:29,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 13:43:29,125 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-23 13:43:29,125 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-23 13:43:29,125 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-23 13:43:29,126 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-23 13:43:29,131 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2022-11-23 13:43:29,131 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-23 13:43:29,132 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 13:43:29,132 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:43:29,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 13:43:29,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:43:29,173 INFO L158 Benchmark]: Toolchain (without parser) took 18494.48ms. Allocated memory was 167.8MB in the beginning and 341.8MB in the end (delta: 174.1MB). Free memory was 123.3MB in the beginning and 171.2MB in the end (delta: -47.9MB). Peak memory consumption was 128.5MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,174 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 87.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:43:29,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.21ms. Allocated memory is still 167.8MB. Free memory was 123.3MB in the beginning and 98.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,174 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.72ms. Allocated memory is still 167.8MB. Free memory was 98.8MB in the beginning and 95.9MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:43:29,175 INFO L158 Benchmark]: Boogie Preprocessor took 72.94ms. Allocated memory is still 167.8MB. Free memory was 95.9MB in the beginning and 94.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,175 INFO L158 Benchmark]: RCFGBuilder took 1173.97ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 83.8MB in the end (delta: 9.5MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,176 INFO L158 Benchmark]: TraceAbstraction took 16442.44ms. Allocated memory was 167.8MB in the beginning and 341.8MB in the end (delta: 174.1MB). Free memory was 83.6MB in the beginning and 175.4MB in the end (delta: -91.8MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,176 INFO L158 Benchmark]: Witness Printer took 56.39ms. Allocated memory is still 341.8MB. Free memory was 175.4MB in the beginning and 171.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:43:29,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 87.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.21ms. Allocated memory is still 167.8MB. Free memory was 123.3MB in the beginning and 98.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.72ms. Allocated memory is still 167.8MB. Free memory was 98.8MB in the beginning and 95.9MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.94ms. Allocated memory is still 167.8MB. Free memory was 95.9MB in the beginning and 94.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1173.97ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 83.8MB in the end (delta: 9.5MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16442.44ms. Allocated memory was 167.8MB in the beginning and 341.8MB in the end (delta: 174.1MB). Free memory was 83.6MB in the beginning and 175.4MB in the end (delta: -91.8MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. * Witness Printer took 56.39ms. Allocated memory is still 341.8MB. Free memory was 175.4MB in the beginning and 171.2MB 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: 12.7s, 173 PlacesBefore, 50 PlacesAfterwards, 162 TransitionsBefore, 38 TransitionsAfterwards, 3864 CoEnabledTransitionPairs, 8 FixpointIterations, 67 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 139 TotalNumberOfCompositions, 14078 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5687, independent: 5321, independent conditional: 0, independent unconditional: 5321, dependent: 366, dependent conditional: 0, dependent unconditional: 366, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2682, independent: 2607, independent conditional: 0, independent unconditional: 2607, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2682, independent: 2542, independent conditional: 0, independent unconditional: 2542, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 140, independent: 65, independent conditional: 0, independent unconditional: 65, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 957, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 790, dependent conditional: 0, dependent unconditional: 790, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5687, independent: 2714, independent conditional: 0, independent unconditional: 2714, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 2682, unknown conditional: 0, unknown unconditional: 2682] , Statistics on independence cache: Total cache size (in pairs): 278, Positive cache size: 248, Positive conditional cache size: 0, Positive unconditional cache size: 248, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, 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: 779]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 779]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 794]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 794]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 824]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 824]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 860]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 860]: 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, 203 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 16.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 386 IncrementalHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 18 mSDtfsCounter, 386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7642occurred 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: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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! [2022-11-23 13:43:29,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceda5244-2fb4-42df-9b9c-ef355b48db08/bin/utaipan-Q6hlc19bkW/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