./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:57:57,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:57:57,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:57:57,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:57:57,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:57:57,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:57:57,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:57:57,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:57:57,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:57:57,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:57:57,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:57:57,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:57:57,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:57:57,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:57:57,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:57:57,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:57:57,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:57:57,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:57:57,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:57:57,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:57:57,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:57:57,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:57:57,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:57:57,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:57:57,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:57:57,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:57:57,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:57:57,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:57:57,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:57:57,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:57:57,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:57:57,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:57:57,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:57:57,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:57:57,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:57:57,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:57:57,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:57:57,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:57:57,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:57:57,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:57:57,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:57:57,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 01:57:57,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:57:57,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:57:57,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:57:57,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:57:57,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:57:57,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:57:57,239 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:57:57,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:57:57,239 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:57:57,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:57:57,241 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:57:57,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:57:57,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:57:57,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:57:57,242 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:57:57,242 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:57:57,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:57:57,243 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:57:57,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:57:57,244 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:57:57,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:57:57,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:57:57,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:57:57,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:57:57,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:57:57,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:57:57,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:57:57,247 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:57:57,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:57:57,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:57:57,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:57:57,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:57:57,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:57:57,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:57:57,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:57,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:57:57,250 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:57:57,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:57:57,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:57:57,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:57:57,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:57:57,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:57:57,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:57:57,251 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_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-11-03 01:57:57,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:57:57,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:57:57,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:57:57,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:57:57,610 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:57:57,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-03 01:57:57,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/data/62429b77e/39326a0daf5d48d8a6d3651b306bfcdd/FLAGc4f7aa8b3 [2022-11-03 01:57:58,256 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:57:58,257 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-03 01:57:58,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/data/62429b77e/39326a0daf5d48d8a6d3651b306bfcdd/FLAGc4f7aa8b3 [2022-11-03 01:57:58,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/data/62429b77e/39326a0daf5d48d8a6d3651b306bfcdd [2022-11-03 01:57:58,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:57:58,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:57:58,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:58,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:57:58,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:57:58,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:58" (1/1) ... [2022-11-03 01:57:58,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316e05ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:58, skipping insertion in model container [2022-11-03 01:57:58,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:58" (1/1) ... [2022-11-03 01:57:58,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:57:58,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:57:59,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-03 01:57:59,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:59,152 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:57:59,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-03 01:57:59,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:59,247 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:57:59,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59 WrapperNode [2022-11-03 01:57:59,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:59,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:59,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:57:59,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:57:59,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,298 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-03 01:57:59,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:59,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:57:59,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:57:59,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:57:59,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:57:59,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:57:59,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:57:59,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:57:59,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (1/1) ... [2022-11-03 01:57:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:59,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:57:59,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:57:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:57:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:57:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:57:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:57:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:57:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:57:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:57:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:57:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:57:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 01:57:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:57:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:57:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:57:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:57:59,437 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:57:59,619 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:57:59,621 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:57:59,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:57:59,986 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:57:59,987 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 01:57:59,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:59 BoogieIcfgContainer [2022-11-03 01:57:59,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:57:59,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:57:59,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:57:59,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:57:59,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:58" (1/3) ... [2022-11-03 01:57:59,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7cabed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:59, skipping insertion in model container [2022-11-03 01:57:59,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:59" (2/3) ... [2022-11-03 01:57:59,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7cabed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:59, skipping insertion in model container [2022-11-03 01:57:59,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:59" (3/3) ... [2022-11-03 01:57:59,999 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-11-03 01:58:00,009 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:58:00,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:58:00,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 01:58:00,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:58:00,118 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 01:58:00,171 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:58:00,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 150 transitions, 316 flow [2022-11-03 01:58:00,201 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 150 transitions, 316 flow [2022-11-03 01:58:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-11-03 01:58:00,342 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-11-03 01:58:00,342 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 01:58:00,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2022-11-03 01:58:00,352 INFO L118 LiptonReduction]: Number of co-enabled transitions 3074 [2022-11-03 01:58:10,041 INFO L133 LiptonReduction]: Checked pairs total: 6892 [2022-11-03 01:58:10,041 INFO L135 LiptonReduction]: Total number of compositions: 133 [2022-11-03 01:58:10,050 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 40 transitions, 96 flow [2022-11-03 01:58:10,097 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 388 states, 364 states have (on average 2.818681318681319) internal successors, (1026), 387 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:58:10,124 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;@85df0d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:58:10,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-03 01:58:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 364 states have (on average 2.818681318681319) internal successors, (1026), 387 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:58:10,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:10,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:58:10,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -265466422, now seen corresponding path program 1 times [2022-11-03 01:58:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:10,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690078684] [2022-11-03 01:58:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:10,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690078684] [2022-11-03 01:58:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690078684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:10,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37975296] [2022-11-03 01:58:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:58:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:58:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:58:10,431 INFO L87 Difference]: Start difference. First operand has 388 states, 364 states have (on average 2.818681318681319) internal successors, (1026), 387 states have internal predecessors, (1026), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:10,523 INFO L93 Difference]: Finished difference Result 388 states and 998 transitions. [2022-11-03 01:58:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:58:10,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:58:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:10,540 INFO L225 Difference]: With dead ends: 388 [2022-11-03 01:58:10,540 INFO L226 Difference]: Without dead ends: 388 [2022-11-03 01:58:10,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:58:10,544 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:10,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-03 01:58:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2022-11-03 01:58:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 364 states have (on average 2.741758241758242) internal successors, (998), 387 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 998 transitions. [2022-11-03 01:58:10,615 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 998 transitions. Word has length 6 [2022-11-03 01:58:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:10,616 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 998 transitions. [2022-11-03 01:58:10,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 998 transitions. [2022-11-03 01:58:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:58:10,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:10,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:58:10,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 360370096, now seen corresponding path program 1 times [2022-11-03 01:58:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:10,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043305815] [2022-11-03 01:58:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:10,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:10,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043305815] [2022-11-03 01:58:10,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043305815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:10,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:10,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475191276] [2022-11-03 01:58:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:10,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:58:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:58:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:58:10,848 INFO L87 Difference]: Start difference. First operand 388 states and 998 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:10,984 INFO L93 Difference]: Finished difference Result 500 states and 1266 transitions. [2022-11-03 01:58:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:58:10,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:58:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:10,991 INFO L225 Difference]: With dead ends: 500 [2022-11-03 01:58:10,991 INFO L226 Difference]: Without dead ends: 478 [2022-11-03 01:58:10,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:10,994 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:10,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 16 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-03 01:58:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-11-03 01:58:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 454 states have (on average 2.671806167400881) internal successors, (1213), 477 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1213 transitions. [2022-11-03 01:58:11,042 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1213 transitions. Word has length 7 [2022-11-03 01:58:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 1213 transitions. [2022-11-03 01:58:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1213 transitions. [2022-11-03 01:58:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:58:11,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:11,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:11,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1713423191, now seen corresponding path program 1 times [2022-11-03 01:58:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:11,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008565276] [2022-11-03 01:58:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:11,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008565276] [2022-11-03 01:58:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008565276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:11,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:11,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373470997] [2022-11-03 01:58:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:11,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,169 INFO L87 Difference]: Start difference. First operand 478 states and 1213 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,243 INFO L93 Difference]: Finished difference Result 536 states and 1359 transitions. [2022-11-03 01:58:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:58:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,246 INFO L225 Difference]: With dead ends: 536 [2022-11-03 01:58:11,247 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 01:58:11,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,250 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:11,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 01:58:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2022-11-03 01:58:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 512 states have (on average 2.654296875) internal successors, (1359), 535 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1359 transitions. [2022-11-03 01:58:11,273 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1359 transitions. Word has length 8 [2022-11-03 01:58:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,274 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1359 transitions. [2022-11-03 01:58:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1359 transitions. [2022-11-03 01:58:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:58:11,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:58:11,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:11,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash 64199868, now seen corresponding path program 1 times [2022-11-03 01:58:11,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:11,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569033056] [2022-11-03 01:58:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:11,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569033056] [2022-11-03 01:58:11,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569033056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:11,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:11,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:11,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752309693] [2022-11-03 01:58:11,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:11,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:11,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,374 INFO L87 Difference]: Start difference. First operand 536 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,470 INFO L93 Difference]: Finished difference Result 348 states and 710 transitions. [2022-11-03 01:58:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:11,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:58:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,472 INFO L225 Difference]: With dead ends: 348 [2022-11-03 01:58:11,472 INFO L226 Difference]: Without dead ends: 348 [2022-11-03 01:58:11,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,473 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:11,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-03 01:58:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2022-11-03 01:58:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 324 states have (on average 2.191358024691358) internal successors, (710), 347 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 710 transitions. [2022-11-03 01:58:11,483 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 710 transitions. Word has length 12 [2022-11-03 01:58:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,484 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 710 transitions. [2022-11-03 01:58:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 710 transitions. [2022-11-03 01:58:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:58:11,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:58:11,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -326691779, now seen corresponding path program 1 times [2022-11-03 01:58:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474690015] [2022-11-03 01:58:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:11,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474690015] [2022-11-03 01:58:11,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474690015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063895980] [2022-11-03 01:58:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:11,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:11,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:58:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:11,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:11,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:11,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063895980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:11,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:11,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-03 01:58:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424513824] [2022-11-03 01:58:11,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:11,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:11,767 INFO L87 Difference]: Start difference. First operand 348 states and 710 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,928 INFO L93 Difference]: Finished difference Result 372 states and 753 transitions. [2022-11-03 01:58:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:58:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,931 INFO L225 Difference]: With dead ends: 372 [2022-11-03 01:58:11,937 INFO L226 Difference]: Without dead ends: 352 [2022-11-03 01:58:11,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:58:11,938 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:11,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-03 01:58:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 340. [2022-11-03 01:58:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 318 states have (on average 2.138364779874214) internal successors, (680), 339 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 680 transitions. [2022-11-03 01:58:11,964 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 680 transitions. Word has length 12 [2022-11-03 01:58:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,965 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 680 transitions. [2022-11-03 01:58:11,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 680 transitions. [2022-11-03 01:58:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:58:11,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:12,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:12,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:12,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2126651368, now seen corresponding path program 1 times [2022-11-03 01:58:12,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:12,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332948625] [2022-11-03 01:58:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:12,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332948625] [2022-11-03 01:58:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332948625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:12,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796505421] [2022-11-03 01:58:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:12,308 INFO L87 Difference]: Start difference. First operand 340 states and 680 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:12,455 INFO L93 Difference]: Finished difference Result 362 states and 708 transitions. [2022-11-03 01:58:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:58:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:58:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:12,475 INFO L225 Difference]: With dead ends: 362 [2022-11-03 01:58:12,475 INFO L226 Difference]: Without dead ends: 362 [2022-11-03 01:58:12,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:12,476 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:12,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 8 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-03 01:58:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 348. [2022-11-03 01:58:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 326 states have (on average 2.098159509202454) internal successors, (684), 347 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 684 transitions. [2022-11-03 01:58:12,489 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 684 transitions. Word has length 13 [2022-11-03 01:58:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:12,489 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 684 transitions. [2022-11-03 01:58:12,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 684 transitions. [2022-11-03 01:58:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:58:12,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:12,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:12,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:58:12,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -9627501, now seen corresponding path program 1 times [2022-11-03 01:58:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485901905] [2022-11-03 01:58:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:12,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485901905] [2022-11-03 01:58:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485901905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:12,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:12,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259520084] [2022-11-03 01:58:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:12,574 INFO L87 Difference]: Start difference. First operand 348 states and 684 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2022-11-03 01:58:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:12,642 INFO L93 Difference]: Finished difference Result 392 states and 769 transitions. [2022-11-03 01:58:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 [2022-11-03 01:58:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:12,645 INFO L225 Difference]: With dead ends: 392 [2022-11-03 01:58:12,645 INFO L226 Difference]: Without dead ends: 392 [2022-11-03 01:58:12,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:12,647 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:12,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-03 01:58:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-11-03 01:58:12,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 370 states have (on average 2.0783783783783782) internal successors, (769), 391 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 769 transitions. [2022-11-03 01:58:12,664 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 769 transitions. Word has length 16 [2022-11-03 01:58:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:12,665 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 769 transitions. [2022-11-03 01:58:12,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2022-11-03 01:58:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 769 transitions. [2022-11-03 01:58:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:58:12,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:12,670 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:58:12,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -662076936, now seen corresponding path program 1 times [2022-11-03 01:58:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:12,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434471525] [2022-11-03 01:58:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:12,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:12,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434471525] [2022-11-03 01:58:12,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434471525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:12,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:12,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:58:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245655804] [2022-11-03 01:58:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:58:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:58:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:12,840 INFO L87 Difference]: Start difference. First operand 392 states and 769 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:13,124 INFO L93 Difference]: Finished difference Result 506 states and 1002 transitions. [2022-11-03 01:58:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:58:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-03 01:58:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:13,127 INFO L225 Difference]: With dead ends: 506 [2022-11-03 01:58:13,127 INFO L226 Difference]: Without dead ends: 506 [2022-11-03 01:58:13,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:58:13,128 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 81 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:13,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 11 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:58:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-03 01:58:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 468. [2022-11-03 01:58:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 446 states have (on average 2.1524663677130045) internal successors, (960), 467 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 960 transitions. [2022-11-03 01:58:13,151 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 960 transitions. Word has length 18 [2022-11-03 01:58:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:13,166 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 960 transitions. [2022-11-03 01:58:13,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 960 transitions. [2022-11-03 01:58:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 01:58:13,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:13,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:58:13,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:13,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 950450199, now seen corresponding path program 1 times [2022-11-03 01:58:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574118753] [2022-11-03 01:58:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:13,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:13,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574118753] [2022-11-03 01:58:13,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574118753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928235450] [2022-11-03 01:58:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:13,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:13,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:58:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:13,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:58:13,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:13,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:13,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928235450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [882503425] [2022-11-03 01:58:13,631 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:58:13,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:13,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-11-03 01:58:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004348454] [2022-11-03 01:58:13,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:13,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:58:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:13,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:58:13,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:58:13,643 INFO L87 Difference]: Start difference. First operand 468 states and 960 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:13,867 INFO L93 Difference]: Finished difference Result 494 states and 990 transitions. [2022-11-03 01:58:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:58:13,868 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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 19 [2022-11-03 01:58:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:13,871 INFO L225 Difference]: With dead ends: 494 [2022-11-03 01:58:13,871 INFO L226 Difference]: Without dead ends: 490 [2022-11-03 01:58:13,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:58:13,872 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 120 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 10 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:58:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-03 01:58:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 438. [2022-11-03 01:58:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 426 states have (on average 2.136150234741784) internal successors, (910), 437 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 910 transitions. [2022-11-03 01:58:13,886 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 910 transitions. Word has length 19 [2022-11-03 01:58:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:13,887 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 910 transitions. [2022-11-03 01:58:13,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 910 transitions. [2022-11-03 01:58:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:58:13,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:13,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:13,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:14,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:14,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1445483853, now seen corresponding path program 1 times [2022-11-03 01:58:14,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:14,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656176278] [2022-11-03 01:58:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:14,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:14,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656176278] [2022-11-03 01:58:14,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656176278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924974803] [2022-11-03 01:58:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:14,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:14,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:14,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:14,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:58:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:14,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:14,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:14,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:14,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924974803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:14,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:14,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 01:58:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022102557] [2022-11-03 01:58:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:14,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:58:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:58:14,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:14,444 INFO L87 Difference]: Start difference. First operand 438 states and 910 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:14,546 INFO L93 Difference]: Finished difference Result 404 states and 830 transitions. [2022-11-03 01:58:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:58:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:58:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:14,548 INFO L225 Difference]: With dead ends: 404 [2022-11-03 01:58:14,549 INFO L226 Difference]: Without dead ends: 404 [2022-11-03 01:58:14,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:14,549 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:14,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-03 01:58:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2022-11-03 01:58:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 395 states have (on average 2.1012658227848102) internal successors, (830), 403 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 830 transitions. [2022-11-03 01:58:14,562 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 830 transitions. Word has length 21 [2022-11-03 01:58:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:14,563 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 830 transitions. [2022-11-03 01:58:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 830 transitions. [2022-11-03 01:58:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:58:14,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:14,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:14,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:14,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 01:58:14,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1445483873, now seen corresponding path program 1 times [2022-11-03 01:58:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:14,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702573573] [2022-11-03 01:58:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:14,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:14,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:14,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702573573] [2022-11-03 01:58:14,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702573573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:14,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:14,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932277764] [2022-11-03 01:58:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:14,843 INFO L87 Difference]: Start difference. First operand 404 states and 830 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:14,909 INFO L93 Difference]: Finished difference Result 370 states and 750 transitions. [2022-11-03 01:58:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:58:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:14,912 INFO L225 Difference]: With dead ends: 370 [2022-11-03 01:58:14,912 INFO L226 Difference]: Without dead ends: 316 [2022-11-03 01:58:14,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:14,913 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:14,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-03 01:58:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 292. [2022-11-03 01:58:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 286 states have (on average 2.0524475524475525) internal successors, (587), 291 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 587 transitions. [2022-11-03 01:58:14,923 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 587 transitions. Word has length 21 [2022-11-03 01:58:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:14,924 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 587 transitions. [2022-11-03 01:58:14,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 587 transitions. [2022-11-03 01:58:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:58:14,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:14,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:58:14,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1439945379, now seen corresponding path program 1 times [2022-11-03 01:58:14,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:14,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336992769] [2022-11-03 01:58:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:14,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:14,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336992769] [2022-11-03 01:58:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336992769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:14,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:14,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017224606] [2022-11-03 01:58:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:14,985 INFO L87 Difference]: Start difference. First operand 292 states and 587 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:15,032 INFO L93 Difference]: Finished difference Result 254 states and 514 transitions. [2022-11-03 01:58:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:58:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:15,034 INFO L225 Difference]: With dead ends: 254 [2022-11-03 01:58:15,035 INFO L226 Difference]: Without dead ends: 254 [2022-11-03 01:58:15,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:15,035 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:15,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-03 01:58:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-03 01:58:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 2.056) internal successors, (514), 253 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 514 transitions. [2022-11-03 01:58:15,043 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 514 transitions. Word has length 21 [2022-11-03 01:58:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:15,043 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 514 transitions. [2022-11-03 01:58:15,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 514 transitions. [2022-11-03 01:58:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:58:15,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:15,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:15,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:58:15,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1439945377, now seen corresponding path program 1 times [2022-11-03 01:58:15,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:15,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475426928] [2022-11-03 01:58:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:15,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:15,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475426928] [2022-11-03 01:58:15,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475426928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:15,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:15,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721229824] [2022-11-03 01:58:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:15,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:15,094 INFO L87 Difference]: Start difference. First operand 254 states and 514 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:15,147 INFO L93 Difference]: Finished difference Result 216 states and 441 transitions. [2022-11-03 01:58:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:58:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:15,149 INFO L225 Difference]: With dead ends: 216 [2022-11-03 01:58:15,149 INFO L226 Difference]: Without dead ends: 204 [2022-11-03 01:58:15,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:15,150 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:15,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-03 01:58:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 190. [2022-11-03 01:58:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 188 states have (on average 2.0425531914893615) internal successors, (384), 189 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 384 transitions. [2022-11-03 01:58:15,157 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 384 transitions. Word has length 21 [2022-11-03 01:58:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:15,157 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 384 transitions. [2022-11-03 01:58:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 384 transitions. [2022-11-03 01:58:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:58:15,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:15,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:58:15,159 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash -807981651, now seen corresponding path program 2 times [2022-11-03 01:58:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117131459] [2022-11-03 01:58:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:15,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:15,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117131459] [2022-11-03 01:58:15,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117131459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:15,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:58:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234033336] [2022-11-03 01:58:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:15,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:15,260 INFO L87 Difference]: Start difference. First operand 190 states and 384 transitions. Second operand has 5 states, 4 states have (on average 5.5) 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) [2022-11-03 01:58:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:15,361 INFO L93 Difference]: Finished difference Result 230 states and 452 transitions. [2022-11-03 01:58:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:58:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) 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 23 [2022-11-03 01:58:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:15,366 INFO L225 Difference]: With dead ends: 230 [2022-11-03 01:58:15,367 INFO L226 Difference]: Without dead ends: 230 [2022-11-03 01:58:15,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:15,367 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:15,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-03 01:58:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 206. [2022-11-03 01:58:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 2.0098039215686274) internal successors, (410), 205 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 410 transitions. [2022-11-03 01:58:15,375 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 410 transitions. Word has length 23 [2022-11-03 01:58:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:15,375 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 410 transitions. [2022-11-03 01:58:15,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) 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) [2022-11-03 01:58:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 410 transitions. [2022-11-03 01:58:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 01:58:15,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:15,377 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:58:15,377 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 01:58:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 620390787, now seen corresponding path program 3 times [2022-11-03 01:58:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570654759] [2022-11-03 01:58:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:58:15,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570654759] [2022-11-03 01:58:15,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570654759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:15,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058739447] [2022-11-03 01:58:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:58:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:15,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:15,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:58:15,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:58:15,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:58:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:15,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:15,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058739447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:15,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:15,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-03 01:58:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689629960] [2022-11-03 01:58:15,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:58:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:58:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:58:15,774 INFO L87 Difference]: Start difference. First operand 206 states and 410 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:15,922 INFO L93 Difference]: Finished difference Result 214 states and 419 transitions. [2022-11-03 01:58:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:58:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 28 [2022-11-03 01:58:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:15,923 INFO L225 Difference]: With dead ends: 214 [2022-11-03 01:58:15,923 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:58:15,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:58:15,924 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 40 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:15,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 7 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:58:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:58:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:58:15,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-03 01:58:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:15,926 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:58:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:58:15,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:58:15,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-03 01:58:15,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-03 01:58:15,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-03 01:58:15,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-03 01:58:15,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-03 01:58:15,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-03 01:58:15,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-03 01:58:15,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-03 01:58:15,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-03 01:58:15,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-03 01:58:15,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-03 01:58:15,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-03 01:58:15,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-03 01:58:15,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-03 01:58:15,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-03 01:58:15,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-03 01:58:15,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-03 01:58:15,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-03 01:58:15,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 01:58:16,148 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:16,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 01:58:16,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:58:16,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:58:16 BasicIcfg [2022-11-03 01:58:16,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:58:16,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:58:16,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:58:16,157 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:58:16,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:59" (3/4) ... [2022-11-03 01:58:16,160 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:58:16,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 01:58:16,166 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 01:58:16,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-03 01:58:16,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 01:58:16,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:58:16,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:58:16,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:58:16,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:58:16,198 INFO L158 Benchmark]: Toolchain (without parser) took 17662.75ms. Allocated memory was 102.8MB in the beginning and 161.5MB in the end (delta: 58.7MB). Free memory was 67.0MB in the beginning and 47.0MB in the end (delta: 20.0MB). Peak memory consumption was 79.3MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,198 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory was 85.0MB in the beginning and 84.8MB in the end (delta: 137.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:58:16,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 701.28ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 64.0MB in the end (delta: 2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.54ms. Allocated memory is still 102.8MB. Free memory was 63.6MB in the beginning and 61.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,199 INFO L158 Benchmark]: Boogie Preprocessor took 31.90ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,200 INFO L158 Benchmark]: RCFGBuilder took 657.82ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 42.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,200 INFO L158 Benchmark]: TraceAbstraction took 16164.34ms. Allocated memory was 102.8MB in the beginning and 161.5MB in the end (delta: 58.7MB). Free memory was 42.0MB in the beginning and 50.1MB in the end (delta: -8.1MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,200 INFO L158 Benchmark]: Witness Printer took 40.91ms. Allocated memory is still 161.5MB. Free memory was 50.1MB in the beginning and 47.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:16,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory was 85.0MB in the beginning and 84.8MB in the end (delta: 137.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 701.28ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 64.0MB in the end (delta: 2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.54ms. Allocated memory is still 102.8MB. Free memory was 63.6MB in the beginning and 61.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.90ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 657.82ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 42.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16164.34ms. Allocated memory was 102.8MB in the beginning and 161.5MB in the end (delta: 58.7MB). Free memory was 42.0MB in the beginning and 50.1MB in the end (delta: -8.1MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 40.91ms. Allocated memory is still 161.5MB. Free memory was 50.1MB in the beginning and 47.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.8s, 147 PlacesBefore, 42 PlacesAfterwards, 150 TransitionsBefore, 40 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 133 TotalNumberOfCompositions, 6892 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4511, positive: 4315, positive conditional: 0, positive unconditional: 4315, negative: 196, negative conditional: 0, negative unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2134, positive: 2074, positive conditional: 0, positive unconditional: 2074, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2134, positive: 2042, positive conditional: 0, positive unconditional: 2042, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 92, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 229, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4511, positive: 2241, positive conditional: 0, positive unconditional: 2241, negative: 136, negative conditional: 0, negative unconditional: 136, unknown: 2134, unknown conditional: 0, unknown unconditional: 2134] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 281, Positive conditional cache size: 0, Positive unconditional cache size: 281, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: 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 5 procedures, 202 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 16.0s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 509 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 509 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 753 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1484 IncrementalHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 107 mSDtfsCounter, 1484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=536occurred in iteration=3, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 178 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 811 SizeOfPredicates, 5 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 59/79 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! [2022-11-03 01:58:16,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b8ecc2-e230-478a-9af0-26d834690e96/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE