./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba --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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- 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-b5237d8 [2022-11-22 00:32:09,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:32:09,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:32:09,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:32:09,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:32:09,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:32:09,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:32:09,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:32:09,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:32:09,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:32:09,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:32:09,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:32:09,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:32:09,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:32:09,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:32:09,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:32:09,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:32:09,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:32:09,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:32:09,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:32:09,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:32:09,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:32:09,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:32:09,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:32:09,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:32:09,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:32:09,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:32:09,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:32:09,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:32:09,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:32:09,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:32:09,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:32:09,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:32:09,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:32:09,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:32:09,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:32:09,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:32:09,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:32:09,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:32:09,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:32:09,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:32:09,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:32:09,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:32:09,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:32:09,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:32:09,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:32:09,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:32:09,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:32:09,380 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:32:09,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:32:09,381 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:32:09,381 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:32:09,382 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:32:09,383 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:32:09,383 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:32:09,383 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:32:09,383 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:32:09,384 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:32:09,384 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:32:09,384 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:32:09,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:32:09,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:32:09,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:32:09,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:32:09,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:32:09,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:32:09,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:32:09,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:32:09,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:32:09,387 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:32:09,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:32:09,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:32:09,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:32:09,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:32:09,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:32:09,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:32:09,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:09,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:32:09,390 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:32:09,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:32:09,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:32:09,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:32:09,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:32:09,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:32:09,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:32:09,392 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_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-11-22 00:32:09,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:32:09,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:32:09,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:32:09,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:32:09,744 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:32:09,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-22 00:32:12,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:32:13,135 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:32:13,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-22 00:32:13,142 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/data/f1b6dabe8/efc02ac174434906874c9229062993a9/FLAGd61e53dbc [2022-11-22 00:32:13,157 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/data/f1b6dabe8/efc02ac174434906874c9229062993a9 [2022-11-22 00:32:13,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:32:13,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:32:13,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:13,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:32:13,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:32:13,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10985e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13, skipping insertion in model container [2022-11-22 00:32:13,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:32:13,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:32:13,437 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-22 00:32:13,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:13,458 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:32:13,505 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-22 00:32:13,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:13,531 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:32:13,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13 WrapperNode [2022-11-22 00:32:13,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:13,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:13,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:32:13,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:32:13,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,611 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2022-11-22 00:32:13,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:13,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:32:13,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:32:13,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:32:13,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:32:13,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:32:13,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:32:13,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:32:13,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (1/1) ... [2022-11-22 00:32:13,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:13,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:32:13,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:32:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:32:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 00:32:13,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 00:32:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 00:32:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 00:32:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:32:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:32:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:32:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 00:32:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 00:32:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:32:13,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:32:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:32:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:32:13,768 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:32:13,917 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:32:13,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:32:14,232 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:32:14,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:32:14,364 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:32:14,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:14 BoogieIcfgContainer [2022-11-22 00:32:14,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:32:14,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:32:14,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:32:14,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:32:14,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:32:13" (1/3) ... [2022-11-22 00:32:14,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae2efa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:14, skipping insertion in model container [2022-11-22 00:32:14,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:13" (2/3) ... [2022-11-22 00:32:14,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae2efa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:14, skipping insertion in model container [2022-11-22 00:32:14,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:14" (3/3) ... [2022-11-22 00:32:14,379 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-11-22 00:32:14,393 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:32:14,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:32:14,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 00:32:14,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:32:14,522 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 00:32:14,560 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:32:14,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 90 transitions, 196 flow [2022-11-22 00:32:14,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 90 transitions, 196 flow [2022-11-22 00:32:14,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2022-11-22 00:32:14,650 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-22 00:32:14,651 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 00:32:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-11-22 00:32:14,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2022-11-22 00:32:18,104 INFO L134 LiptonReduction]: Checked pairs total: 4602 [2022-11-22 00:32:18,105 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-11-22 00:32:18,113 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 82 flow [2022-11-22 00:32:18,159 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 326 states, 300 states have (on average 2.46) internal successors, (738), 325 states have internal predecessors, (738), 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) [2022-11-22 00:32:18,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:32:18,185 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;@36feebcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:32:18,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-22 00:32:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 300 states have (on average 2.46) internal successors, (738), 325 states have internal predecessors, (738), 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) [2022-11-22 00:32:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 00:32:18,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:18,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 00:32:18,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash 408693, now seen corresponding path program 1 times [2022-11-22 00:32:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:18,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305733546] [2022-11-22 00:32:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:18,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305733546] [2022-11-22 00:32:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305733546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:18,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:18,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:32:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943114180] [2022-11-22 00:32:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:18,541 INFO L87 Difference]: Start difference. First operand has 326 states, 300 states have (on average 2.46) internal successors, (738), 325 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:18,668 INFO L93 Difference]: Finished difference Result 306 states and 686 transitions. [2022-11-22 00:32:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 00:32:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:18,693 INFO L225 Difference]: With dead ends: 306 [2022-11-22 00:32:18,694 INFO L226 Difference]: Without dead ends: 294 [2022-11-22 00:32:18,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:18,700 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:18,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-22 00:32:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-11-22 00:32:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 274 states have (on average 2.397810218978102) internal successors, (657), 293 states have internal predecessors, (657), 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) [2022-11-22 00:32:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 657 transitions. [2022-11-22 00:32:18,779 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 657 transitions. Word has length 3 [2022-11-22 00:32:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:18,780 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 657 transitions. [2022-11-22 00:32:18,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 657 transitions. [2022-11-22 00:32:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:32:18,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:18,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:32:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:32:18,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 392775316, now seen corresponding path program 1 times [2022-11-22 00:32:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909379629] [2022-11-22 00:32:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:18,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:18,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:18,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909379629] [2022-11-22 00:32:18,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909379629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:18,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:18,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:32:18,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101498458] [2022-11-22 00:32:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:18,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:18,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:18,900 INFO L87 Difference]: Start difference. First operand 294 states and 657 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:18,976 INFO L93 Difference]: Finished difference Result 286 states and 629 transitions. [2022-11-22 00:32:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:32:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:18,979 INFO L225 Difference]: With dead ends: 286 [2022-11-22 00:32:18,979 INFO L226 Difference]: Without dead ends: 286 [2022-11-22 00:32:18,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:18,982 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:18,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-22 00:32:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-11-22 00:32:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 266 states have (on average 2.3646616541353382) internal successors, (629), 285 states have internal predecessors, (629), 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) [2022-11-22 00:32:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 629 transitions. [2022-11-22 00:32:19,014 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 629 transitions. Word has length 5 [2022-11-22 00:32:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:19,015 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 629 transitions. [2022-11-22 00:32:19,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 629 transitions. [2022-11-22 00:32:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:32:19,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:32:19,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -710007890, now seen corresponding path program 1 times [2022-11-22 00:32:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362908291] [2022-11-22 00:32:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:19,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362908291] [2022-11-22 00:32:19,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362908291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:19,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:19,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:32:19,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539104087] [2022-11-22 00:32:19,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:19,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:19,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:19,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:19,150 INFO L87 Difference]: Start difference. First operand 286 states and 629 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:19,231 INFO L93 Difference]: Finished difference Result 210 states and 441 transitions. [2022-11-22 00:32:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 00:32:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:19,233 INFO L225 Difference]: With dead ends: 210 [2022-11-22 00:32:19,233 INFO L226 Difference]: Without dead ends: 210 [2022-11-22 00:32:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:19,235 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:19,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-22 00:32:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-22 00:32:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 202 states have (on average 2.1831683168316833) internal successors, (441), 209 states have internal predecessors, (441), 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) [2022-11-22 00:32:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 441 transitions. [2022-11-22 00:32:19,243 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 441 transitions. Word has length 6 [2022-11-22 00:32:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:19,243 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 441 transitions. [2022-11-22 00:32:19,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 441 transitions. [2022-11-22 00:32:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:32:19,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:32:19,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash -500030766, now seen corresponding path program 1 times [2022-11-22 00:32:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591982331] [2022-11-22 00:32:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:19,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591982331] [2022-11-22 00:32:19,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591982331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:19,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:19,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437503231] [2022-11-22 00:32:19,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:19,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:19,390 INFO L87 Difference]: Start difference. First operand 210 states and 441 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:19,552 INFO L93 Difference]: Finished difference Result 292 states and 608 transitions. [2022-11-22 00:32:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:32:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:19,554 INFO L225 Difference]: With dead ends: 292 [2022-11-22 00:32:19,555 INFO L226 Difference]: Without dead ends: 292 [2022-11-22 00:32:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:19,559 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 101 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:19,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 8 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-22 00:32:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 198. [2022-11-22 00:32:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 2.1727748691099475) internal successors, (415), 197 states have internal predecessors, (415), 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) [2022-11-22 00:32:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 415 transitions. [2022-11-22 00:32:19,571 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 415 transitions. Word has length 7 [2022-11-22 00:32:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:19,572 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 415 transitions. [2022-11-22 00:32:19,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 415 transitions. [2022-11-22 00:32:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:32:19,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:32:19,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash -500030765, now seen corresponding path program 1 times [2022-11-22 00:32:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669013151] [2022-11-22 00:32:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:19,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:19,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669013151] [2022-11-22 00:32:19,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669013151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:19,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:19,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493060511] [2022-11-22 00:32:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:19,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:19,675 INFO L87 Difference]: Start difference. First operand 198 states and 415 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:19,848 INFO L93 Difference]: Finished difference Result 280 states and 582 transitions. [2022-11-22 00:32:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:32:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:19,853 INFO L225 Difference]: With dead ends: 280 [2022-11-22 00:32:19,853 INFO L226 Difference]: Without dead ends: 280 [2022-11-22 00:32:19,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:19,855 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 78 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:19,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 10 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-22 00:32:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 186. [2022-11-22 00:32:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 2.161111111111111) internal successors, (389), 185 states have internal predecessors, (389), 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) [2022-11-22 00:32:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 389 transitions. [2022-11-22 00:32:19,870 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 389 transitions. Word has length 7 [2022-11-22 00:32:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:19,871 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 389 transitions. [2022-11-22 00:32:19,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 389 transitions. [2022-11-22 00:32:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:32:19,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:32:19,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash -500053959, now seen corresponding path program 1 times [2022-11-22 00:32:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303668454] [2022-11-22 00:32:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:19,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:19,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303668454] [2022-11-22 00:32:19,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303668454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:19,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:19,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675193799] [2022-11-22 00:32:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:19,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:19,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:19,976 INFO L87 Difference]: Start difference. First operand 186 states and 389 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:20,135 INFO L93 Difference]: Finished difference Result 264 states and 550 transitions. [2022-11-22 00:32:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:32:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:20,141 INFO L225 Difference]: With dead ends: 264 [2022-11-22 00:32:20,141 INFO L226 Difference]: Without dead ends: 264 [2022-11-22 00:32:20,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:20,143 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 93 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:20,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 9 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-22 00:32:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 172. [2022-11-22 00:32:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 2.161676646706587) internal successors, (361), 171 states have internal predecessors, (361), 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) [2022-11-22 00:32:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 361 transitions. [2022-11-22 00:32:20,152 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 361 transitions. Word has length 7 [2022-11-22 00:32:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 361 transitions. [2022-11-22 00:32:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 361 transitions. [2022-11-22 00:32:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:32:20,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:20,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:32:20,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -500053958, now seen corresponding path program 1 times [2022-11-22 00:32:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448967427] [2022-11-22 00:32:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:20,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448967427] [2022-11-22 00:32:20,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448967427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:20,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:20,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:20,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172412362] [2022-11-22 00:32:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:20,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:20,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:20,238 INFO L87 Difference]: Start difference. First operand 172 states and 361 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:20,389 INFO L93 Difference]: Finished difference Result 250 states and 522 transitions. [2022-11-22 00:32:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:32:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:20,391 INFO L225 Difference]: With dead ends: 250 [2022-11-22 00:32:20,391 INFO L226 Difference]: Without dead ends: 250 [2022-11-22 00:32:20,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:20,392 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:20,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 11 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-22 00:32:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 158. [2022-11-22 00:32:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 2.1623376623376624) internal successors, (333), 157 states have internal predecessors, (333), 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) [2022-11-22 00:32:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 333 transitions. [2022-11-22 00:32:20,401 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 333 transitions. Word has length 7 [2022-11-22 00:32:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:20,401 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 333 transitions. [2022-11-22 00:32:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 333 transitions. [2022-11-22 00:32:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:32:20,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:20,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:32:20,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 777061493, now seen corresponding path program 1 times [2022-11-22 00:32:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915566853] [2022-11-22 00:32:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:20,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915566853] [2022-11-22 00:32:20,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915566853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:20,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:20,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:20,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63620755] [2022-11-22 00:32:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:20,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:20,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:20,532 INFO L87 Difference]: Start difference. First operand 158 states and 333 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-22 00:32:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:20,629 INFO L93 Difference]: Finished difference Result 154 states and 325 transitions. [2022-11-22 00:32:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-11-22 00:32:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:20,631 INFO L225 Difference]: With dead ends: 154 [2022-11-22 00:32:20,631 INFO L226 Difference]: Without dead ends: 154 [2022-11-22 00:32:20,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:20,632 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:20,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-22 00:32:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-22 00:32:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 151 states have (on average 2.152317880794702) internal successors, (325), 153 states have internal predecessors, (325), 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) [2022-11-22 00:32:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 325 transitions. [2022-11-22 00:32:20,638 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 325 transitions. Word has length 14 [2022-11-22 00:32:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 325 transitions. [2022-11-22 00:32:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-22 00:32:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 325 transitions. [2022-11-22 00:32:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:32:20,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:20,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:20,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:32:20,645 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1038501482, now seen corresponding path program 1 times [2022-11-22 00:32:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069236369] [2022-11-22 00:32:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:20,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069236369] [2022-11-22 00:32:20,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069236369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:20,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:20,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945596636] [2022-11-22 00:32:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:20,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:20,773 INFO L87 Difference]: Start difference. First operand 154 states and 325 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-22 00:32:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:20,855 INFO L93 Difference]: Finished difference Result 148 states and 313 transitions. [2022-11-22 00:32:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:20,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-11-22 00:32:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:20,861 INFO L225 Difference]: With dead ends: 148 [2022-11-22 00:32:20,861 INFO L226 Difference]: Without dead ends: 148 [2022-11-22 00:32:20,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:20,864 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:20,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-22 00:32:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-22 00:32:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 2.143835616438356) internal successors, (313), 147 states have internal predecessors, (313), 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) [2022-11-22 00:32:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 313 transitions. [2022-11-22 00:32:20,872 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 313 transitions. Word has length 14 [2022-11-22 00:32:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:20,872 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 313 transitions. [2022-11-22 00:32:20,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-22 00:32:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 313 transitions. [2022-11-22 00:32:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:32:20,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:20,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:32:20,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1680899102, now seen corresponding path program 1 times [2022-11-22 00:32:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686301869] [2022-11-22 00:32:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:20,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686301869] [2022-11-22 00:32:20,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686301869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:20,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:20,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32930556] [2022-11-22 00:32:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:20,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:20,988 INFO L87 Difference]: Start difference. First operand 148 states and 313 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-22 00:32:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:21,056 INFO L93 Difference]: Finished difference Result 144 states and 305 transitions. [2022-11-22 00:32:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:32:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-22 00:32:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:21,057 INFO L225 Difference]: With dead ends: 144 [2022-11-22 00:32:21,057 INFO L226 Difference]: Without dead ends: 114 [2022-11-22 00:32:21,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:21,058 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:21,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-22 00:32:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-22 00:32:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.088495575221239) internal successors, (236), 113 states have internal predecessors, (236), 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) [2022-11-22 00:32:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 236 transitions. [2022-11-22 00:32:21,066 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 236 transitions. Word has length 15 [2022-11-22 00:32:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:21,066 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 236 transitions. [2022-11-22 00:32:21,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-22 00:32:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 236 transitions. [2022-11-22 00:32:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:32:21,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:21,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:21,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:32:21,068 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 00:32:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1870913363, now seen corresponding path program 1 times [2022-11-22 00:32:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784751282] [2022-11-22 00:32:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:21,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:21,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784751282] [2022-11-22 00:32:21,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784751282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:21,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:21,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030213607] [2022-11-22 00:32:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:21,140 INFO L87 Difference]: Start difference. First operand 114 states and 236 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-22 00:32:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:21,185 INFO L93 Difference]: Finished difference Result 108 states and 224 transitions. [2022-11-22 00:32:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:32:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-22 00:32:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:21,186 INFO L225 Difference]: With dead ends: 108 [2022-11-22 00:32:21,186 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:32:21,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:21,187 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:21,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:32:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:32:21,188 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) [2022-11-22 00:32:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:32:21,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-22 00:32:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:21,189 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:32:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-22 00:32:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:32:21,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:32:21,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-22 00:32:21,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-22 00:32:21,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-22 00:32:21,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-22 00:32:21,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-22 00:32:21,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-22 00:32:21,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-22 00:32:21,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-22 00:32:21,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-22 00:32:21,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-22 00:32:21,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-22 00:32:21,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-22 00:32:21,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-22 00:32:21,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-22 00:32:21,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-22 00:32:21,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-22 00:32:21,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-22 00:32:21,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-22 00:32:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:32:21,201 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:21,206 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 00:32:21,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:32:21,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:32:21 BasicIcfg [2022-11-22 00:32:21,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:32:21,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:32:21,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:32:21,211 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:32:21,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:14" (3/4) ... [2022-11-22 00:32:21,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:32:21,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-22 00:32:21,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-22 00:32:21,225 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-22 00:32:21,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 00:32:21,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 00:32:21,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:32:21,260 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:32:21,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:32:21,261 INFO L158 Benchmark]: Toolchain (without parser) took 8099.11ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.4MB in the beginning and 109.1MB in the end (delta: 13.3MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,261 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:32:21,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.75ms. Allocated memory is still 155.2MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.55ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,262 INFO L158 Benchmark]: Boogie Preprocessor took 55.62ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 108.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:32:21,263 INFO L158 Benchmark]: RCFGBuilder took 696.98ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 89.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,263 INFO L158 Benchmark]: TraceAbstraction took 6841.26ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 88.9MB in the beginning and 112.3MB in the end (delta: -23.4MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,264 INFO L158 Benchmark]: Witness Printer took 49.63ms. Allocated memory is still 186.6MB. Free memory was 111.2MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:32:21,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.75ms. Allocated memory is still 155.2MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.55ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.62ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 108.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 696.98ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 89.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6841.26ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 88.9MB in the beginning and 112.3MB in the end (delta: -23.4MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Witness Printer took 49.63ms. Allocated memory is still 186.6MB. Free memory was 111.2MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 96 PlacesBefore, 40 PlacesAfterwards, 90 TransitionsBefore, 33 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 75 TotalNumberOfCompositions, 4602 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2125, independent: 1896, independent conditional: 0, independent unconditional: 1896, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 690, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 690, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 200, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2125, independent: 1251, independent conditional: 0, independent unconditional: 1251, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 690, unknown conditional: 0, unknown unconditional: 690] , Statistics on independence cache: Total cache size (in pairs): 220, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 124 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 584 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 827 IncrementalHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 14 mSDtfsCounter, 827 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred in iteration=0, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 372 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 00:32:21,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ee19b0-241d-4d5f-8872-0fbed9dd295d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE