./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/kundu1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/kundu1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 --- 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-e04fb08 [2022-11-16 19:57:04,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:57:04,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:57:04,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:57:04,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:57:04,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:57:04,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:57:04,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:57:04,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:57:04,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:57:04,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:57:04,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:57:04,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:57:04,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:57:04,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:57:04,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:57:04,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:57:04,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:57:04,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:57:04,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:57:04,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:57:04,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:57:04,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:57:04,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:57:04,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:57:04,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:57:04,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:57:04,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:57:04,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:57:04,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:57:04,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:57:04,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:57:04,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:57:04,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:57:04,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:57:04,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:57:04,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:57:04,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:57:04,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:57:04,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:57:04,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:57:04,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:57:04,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:57:04,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:57:04,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:57:04,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:57:04,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:57:04,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:57:04,347 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:57:04,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:57:04,347 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:57:04,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:57:04,348 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:57:04,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:57:04,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:57:04,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:57:04,349 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:57:04,349 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:57:04,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:57:04,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:57:04,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:57:04,350 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:57:04,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:57:04,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:57:04,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:57:04,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:57:04,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:57:04,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:57:04,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:57:04,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:57:04,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:57:04,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:57:04,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:57:04,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:57:04,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:04,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:57:04,354 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:57:04,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:57:04,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:57:04,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:57:04,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:57:04,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:57:04,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:57:04,356 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_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 [2022-11-16 19:57:04,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:57:04,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:57:04,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:57:04,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:57:04,659 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:57:04,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-16 19:57:04,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/data/048d3b895/b1ad99a1203249ddb698710354a6a97a/FLAG10621e7b8 [2022-11-16 19:57:05,267 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:57:05,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-16 19:57:05,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/data/048d3b895/b1ad99a1203249ddb698710354a6a97a/FLAG10621e7b8 [2022-11-16 19:57:05,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/data/048d3b895/b1ad99a1203249ddb698710354a6a97a [2022-11-16 19:57:05,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:57:05,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:57:05,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:05,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:57:05,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:57:05,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:05" (1/1) ... [2022-11-16 19:57:05,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15940ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:05, skipping insertion in model container [2022-11-16 19:57:05,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:05" (1/1) ... [2022-11-16 19:57:05,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:57:05,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:57:05,903 WARN L229 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_0ecb849a-5d9e-4053-a718-5150035ac72e/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-16 19:57:06,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:06,013 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:57:06,028 WARN L229 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_0ecb849a-5d9e-4053-a718-5150035ac72e/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-16 19:57:06,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:06,086 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:57:06,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06 WrapperNode [2022-11-16 19:57:06,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:06,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:06,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:57:06,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:57:06,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,148 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 257 [2022-11-16 19:57:06,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:06,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:57:06,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:57:06,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:57:06,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:57:06,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:57:06,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:57:06,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:57:06,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (1/1) ... [2022-11-16 19:57:06,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:06,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:06,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:57:06,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:57:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:57:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-16 19:57:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-16 19:57:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 19:57:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 19:57:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 19:57:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 19:57:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 19:57:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 19:57:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 19:57:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 19:57:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:57:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 19:57:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 19:57:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:57:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:57:06,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:57:06,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:57:06,794 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:57:06,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:57:06,950 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 19:57:06,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:57:06 BoogieIcfgContainer [2022-11-16 19:57:06,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:57:06,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:57:06,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:57:06,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:57:06,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:57:05" (1/3) ... [2022-11-16 19:57:06,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751cc1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:57:06, skipping insertion in model container [2022-11-16 19:57:06,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:06" (2/3) ... [2022-11-16 19:57:06,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751cc1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:57:06, skipping insertion in model container [2022-11-16 19:57:06,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:57:06" (3/3) ... [2022-11-16 19:57:06,962 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu1.cil.c [2022-11-16 19:57:06,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:57:06,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:57:07,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:57:07,078 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;@7e0a3e69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:57:07,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:57:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 19:57:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:57:07,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:07,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:07,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1624735659, now seen corresponding path program 1 times [2022-11-16 19:57:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551397891] [2022-11-16 19:57:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:07,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:57:07,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:07,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551397891] [2022-11-16 19:57:07,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551397891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:07,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:07,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:57:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297029352] [2022-11-16 19:57:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:07,588 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:57:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:07,896 INFO L93 Difference]: Finished difference Result 209 states and 305 transitions. [2022-11-16 19:57:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:57:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-16 19:57:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:07,913 INFO L225 Difference]: With dead ends: 209 [2022-11-16 19:57:07,914 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 19:57:07,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:07,927 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:07,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 264 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:57:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 19:57:07,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2022-11-16 19:57:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 96 states have internal predecessors, (133), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 19:57:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2022-11-16 19:57:07,989 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 34 [2022-11-16 19:57:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2022-11-16 19:57:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:57:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2022-11-16 19:57:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:57:07,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:07,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:07,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:57:07,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:07,994 INFO L85 PathProgramCache]: Analyzing trace with hash 34340682, now seen corresponding path program 1 times [2022-11-16 19:57:07,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:07,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306058978] [2022-11-16 19:57:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:57:08,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:08,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306058978] [2022-11-16 19:57:08,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306058978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:08,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:08,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:57:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239785977] [2022-11-16 19:57:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:08,091 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:57:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:08,334 INFO L93 Difference]: Finished difference Result 366 states and 507 transitions. [2022-11-16 19:57:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:57:08,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-16 19:57:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:08,338 INFO L225 Difference]: With dead ends: 366 [2022-11-16 19:57:08,338 INFO L226 Difference]: Without dead ends: 244 [2022-11-16 19:57:08,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:08,341 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 169 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:08,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 236 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:57:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-16 19:57:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2022-11-16 19:57:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 165 states have (on average 1.3636363636363635) internal successors, (225), 168 states have internal predecessors, (225), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-16 19:57:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2022-11-16 19:57:08,405 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 300 transitions. Word has length 34 [2022-11-16 19:57:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:08,406 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 300 transitions. [2022-11-16 19:57:08,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:57:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 300 transitions. [2022-11-16 19:57:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 19:57:08,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:08,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:08,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:57:08,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -28804500, now seen corresponding path program 1 times [2022-11-16 19:57:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760925061] [2022-11-16 19:57:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:57:08,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760925061] [2022-11-16 19:57:08,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760925061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:08,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:08,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:57:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591863251] [2022-11-16 19:57:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:08,589 INFO L87 Difference]: Start difference. First operand 225 states and 300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:08,818 INFO L93 Difference]: Finished difference Result 607 states and 835 transitions. [2022-11-16 19:57:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:57:08,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-11-16 19:57:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:08,827 INFO L225 Difference]: With dead ends: 607 [2022-11-16 19:57:08,827 INFO L226 Difference]: Without dead ends: 435 [2022-11-16 19:57:08,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:57:08,839 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 129 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:08,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 335 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-16 19:57:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 328. [2022-11-16 19:57:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 242 states have (on average 1.3636363636363635) internal successors, (330), 245 states have internal predecessors, (330), 55 states have call successors, (55), 31 states have call predecessors, (55), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-16 19:57:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 437 transitions. [2022-11-16 19:57:08,900 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 437 transitions. Word has length 35 [2022-11-16 19:57:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:08,901 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 437 transitions. [2022-11-16 19:57:08,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 437 transitions. [2022-11-16 19:57:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 19:57:08,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:08,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:57:08,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1374328358, now seen corresponding path program 1 times [2022-11-16 19:57:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186508618] [2022-11-16 19:57:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:57:08,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:08,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186508618] [2022-11-16 19:57:09,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186508618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:09,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:09,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:57:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526441992] [2022-11-16 19:57:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:09,002 INFO L87 Difference]: Start difference. First operand 328 states and 437 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:09,218 INFO L93 Difference]: Finished difference Result 509 states and 680 transitions. [2022-11-16 19:57:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:57:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-16 19:57:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:09,224 INFO L225 Difference]: With dead ends: 509 [2022-11-16 19:57:09,225 INFO L226 Difference]: Without dead ends: 392 [2022-11-16 19:57:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:09,236 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 150 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:09,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 184 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-16 19:57:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 383. [2022-11-16 19:57:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 284 states have (on average 1.3626760563380282) internal successors, (387), 287 states have internal predecessors, (387), 63 states have call successors, (63), 36 states have call predecessors, (63), 35 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-16 19:57:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 510 transitions. [2022-11-16 19:57:09,288 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 510 transitions. Word has length 43 [2022-11-16 19:57:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:09,289 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 510 transitions. [2022-11-16 19:57:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 510 transitions. [2022-11-16 19:57:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 19:57:09,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:09,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:09,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:57:09,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1322400223, now seen corresponding path program 1 times [2022-11-16 19:57:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:09,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012798697] [2022-11-16 19:57:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:09,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:57:09,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012798697] [2022-11-16 19:57:09,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012798697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:09,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:09,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:57:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241418760] [2022-11-16 19:57:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:57:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:57:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:57:09,557 INFO L87 Difference]: Start difference. First operand 383 states and 510 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:09,987 INFO L93 Difference]: Finished difference Result 1013 states and 1383 transitions. [2022-11-16 19:57:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:57:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-11-16 19:57:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:09,998 INFO L225 Difference]: With dead ends: 1013 [2022-11-16 19:57:09,998 INFO L226 Difference]: Without dead ends: 735 [2022-11-16 19:57:10,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:57:10,006 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 267 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:10,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 616 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:57:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-16 19:57:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 539. [2022-11-16 19:57:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 401 states have (on average 1.3591022443890275) internal successors, (545), 404 states have internal predecessors, (545), 87 states have call successors, (87), 51 states have call predecessors, (87), 50 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-16 19:57:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 716 transitions. [2022-11-16 19:57:10,095 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 716 transitions. Word has length 46 [2022-11-16 19:57:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:10,096 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 716 transitions. [2022-11-16 19:57:10,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:57:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 716 transitions. [2022-11-16 19:57:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 19:57:10,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:10,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:10,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:57:10,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1133597288, now seen corresponding path program 1 times [2022-11-16 19:57:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377967642] [2022-11-16 19:57:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:57:10,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377967642] [2022-11-16 19:57:10,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377967642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:10,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:10,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:57:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071495138] [2022-11-16 19:57:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:10,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:57:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:57:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:57:10,304 INFO L87 Difference]: Start difference. First operand 539 states and 716 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 19:57:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:10,664 INFO L93 Difference]: Finished difference Result 1556 states and 2057 transitions. [2022-11-16 19:57:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:57:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-11-16 19:57:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:10,672 INFO L225 Difference]: With dead ends: 1556 [2022-11-16 19:57:10,672 INFO L226 Difference]: Without dead ends: 1023 [2022-11-16 19:57:10,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:57:10,678 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 182 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:10,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 212 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:57:10,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-11-16 19:57:10,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 992. [2022-11-16 19:57:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 724 states have (on average 1.3342541436464088) internal successors, (966), 727 states have internal predecessors, (966), 167 states have call successors, (167), 101 states have call predecessors, (167), 100 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-16 19:57:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1297 transitions. [2022-11-16 19:57:10,865 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1297 transitions. Word has length 48 [2022-11-16 19:57:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:10,866 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1297 transitions. [2022-11-16 19:57:10,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 19:57:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1297 transitions. [2022-11-16 19:57:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 19:57:10,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:10,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:10,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:57:10,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 175129522, now seen corresponding path program 1 times [2022-11-16 19:57:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209321203] [2022-11-16 19:57:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:57:10,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:10,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209321203] [2022-11-16 19:57:10,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209321203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:10,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:10,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:57:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712837121] [2022-11-16 19:57:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:10,935 INFO L87 Difference]: Start difference. First operand 992 states and 1297 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:57:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:11,164 INFO L93 Difference]: Finished difference Result 2491 states and 3230 transitions. [2022-11-16 19:57:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-16 19:57:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:11,172 INFO L225 Difference]: With dead ends: 2491 [2022-11-16 19:57:11,172 INFO L226 Difference]: Without dead ends: 1505 [2022-11-16 19:57:11,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:11,176 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:11,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 194 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-16 19:57:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1235. [2022-11-16 19:57:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 923 states have (on average 1.333694474539545) internal successors, (1231), 927 states have internal predecessors, (1231), 189 states have call successors, (189), 123 states have call predecessors, (189), 122 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2022-11-16 19:57:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1606 transitions. [2022-11-16 19:57:11,373 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1606 transitions. Word has length 49 [2022-11-16 19:57:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:11,374 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1606 transitions. [2022-11-16 19:57:11,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:57:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1606 transitions. [2022-11-16 19:57:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 19:57:11,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:11,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:57:11,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -379002054, now seen corresponding path program 1 times [2022-11-16 19:57:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907108857] [2022-11-16 19:57:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:57:11,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:11,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907108857] [2022-11-16 19:57:11,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907108857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:11,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:11,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:57:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015608225] [2022-11-16 19:57:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:11,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:11,418 INFO L87 Difference]: Start difference. First operand 1235 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:57:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:11,653 INFO L93 Difference]: Finished difference Result 2860 states and 3725 transitions. [2022-11-16 19:57:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-11-16 19:57:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:11,663 INFO L225 Difference]: With dead ends: 2860 [2022-11-16 19:57:11,663 INFO L226 Difference]: Without dead ends: 1631 [2022-11-16 19:57:11,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:11,667 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:11,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 195 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-11-16 19:57:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1437. [2022-11-16 19:57:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1085 states have (on average 1.335483870967742) internal successors, (1449), 1089 states have internal predecessors, (1449), 209 states have call successors, (209), 143 states have call predecessors, (209), 142 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2022-11-16 19:57:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1864 transitions. [2022-11-16 19:57:11,849 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1864 transitions. Word has length 50 [2022-11-16 19:57:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:11,850 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1864 transitions. [2022-11-16 19:57:11,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:57:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1864 transitions. [2022-11-16 19:57:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 19:57:11,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:11,852 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:57:11,853 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1557181953, now seen corresponding path program 1 times [2022-11-16 19:57:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524049276] [2022-11-16 19:57:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:57:12,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:12,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524049276] [2022-11-16 19:57:12,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524049276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:12,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611090514] [2022-11-16 19:57:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:12,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:12,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:12,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:57:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:12,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:57:12,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 19:57:12,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:12,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611090514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:12,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:12,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-11-16 19:57:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745329325] [2022-11-16 19:57:12,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:12,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:57:12,609 INFO L87 Difference]: Start difference. First operand 1437 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:13,079 INFO L93 Difference]: Finished difference Result 3838 states and 4994 transitions. [2022-11-16 19:57:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:13,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-11-16 19:57:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:13,092 INFO L225 Difference]: With dead ends: 3838 [2022-11-16 19:57:13,092 INFO L226 Difference]: Without dead ends: 2828 [2022-11-16 19:57:13,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:57:13,098 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 49 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:13,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-11-16 19:57:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2815. [2022-11-16 19:57:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.333177788147457) internal successors, (2857), 2147 states have internal predecessors, (2857), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-16 19:57:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3632 transitions. [2022-11-16 19:57:13,446 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3632 transitions. Word has length 88 [2022-11-16 19:57:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:13,447 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3632 transitions. [2022-11-16 19:57:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3632 transitions. [2022-11-16 19:57:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 19:57:13,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:13,451 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:13,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash -207634656, now seen corresponding path program 1 times [2022-11-16 19:57:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:13,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646148932] [2022-11-16 19:57:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:13,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:57:14,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646148932] [2022-11-16 19:57:14,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646148932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688405391] [2022-11-16 19:57:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:14,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:14,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:57:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:57:14,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:57:14,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:14,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688405391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:14,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 19:57:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527022122] [2022-11-16 19:57:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:57:14,315 INFO L87 Difference]: Start difference. First operand 2815 states and 3632 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:14,680 INFO L93 Difference]: Finished difference Result 4830 states and 6297 transitions. [2022-11-16 19:57:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 88 [2022-11-16 19:57:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:14,692 INFO L225 Difference]: With dead ends: 4830 [2022-11-16 19:57:14,693 INFO L226 Difference]: Without dead ends: 2843 [2022-11-16 19:57:14,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:57:14,699 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 68 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:14,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 220 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-11-16 19:57:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2815. [2022-11-16 19:57:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3201119925338312) internal successors, (2829), 2147 states have internal predecessors, (2829), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-16 19:57:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3604 transitions. [2022-11-16 19:57:15,102 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3604 transitions. Word has length 88 [2022-11-16 19:57:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:15,103 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3604 transitions. [2022-11-16 19:57:15,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3604 transitions. [2022-11-16 19:57:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 19:57:15,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:15,114 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:15,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:15,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 19:57:15,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 49377354, now seen corresponding path program 1 times [2022-11-16 19:57:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:15,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830633094] [2022-11-16 19:57:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:15,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 19:57:15,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:15,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830633094] [2022-11-16 19:57:15,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830633094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:15,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045550270] [2022-11-16 19:57:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:15,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:15,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:15,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:57:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:15,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:57:15,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:57:15,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:15,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045550270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:15,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:15,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-16 19:57:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503065851] [2022-11-16 19:57:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:15,662 INFO L87 Difference]: Start difference. First operand 2815 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:16,018 INFO L93 Difference]: Finished difference Result 4816 states and 6236 transitions. [2022-11-16 19:57:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-11-16 19:57:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:16,031 INFO L225 Difference]: With dead ends: 4816 [2022-11-16 19:57:16,031 INFO L226 Difference]: Without dead ends: 2815 [2022-11-16 19:57:16,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:16,037 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:16,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-11-16 19:57:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2022-11-16 19:57:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3070461969202054) internal successors, (2801), 2147 states have internal predecessors, (2801), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-16 19:57:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3576 transitions. [2022-11-16 19:57:16,397 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3576 transitions. Word has length 88 [2022-11-16 19:57:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:16,398 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3576 transitions. [2022-11-16 19:57:16,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3576 transitions. [2022-11-16 19:57:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 19:57:16,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:16,401 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:16,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 19:57:16,608 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1858608875, now seen corresponding path program 1 times [2022-11-16 19:57:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:16,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545057642] [2022-11-16 19:57:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:57:16,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545057642] [2022-11-16 19:57:16,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545057642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386059848] [2022-11-16 19:57:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:16,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:16,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:16,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:17,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:57:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:17,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:57:17,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 19:57:17,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 19:57:17,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386059848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:17,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420016767] [2022-11-16 19:57:17,414 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-16 19:57:17,414 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:57:17,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:57:17,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:57:17,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:57:21,176 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 107 for LOIs [2022-11-16 19:57:21,226 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 115 for LOIs [2022-11-16 19:57:21,276 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 115 for LOIs [2022-11-16 19:57:21,312 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 42 for LOIs [2022-11-16 19:57:21,320 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2022-11-16 19:57:21,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:57:27,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [420016767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:27,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:57:27,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [12, 4, 5] total 45 [2022-11-16 19:57:27,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103056107] [2022-11-16 19:57:27,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:27,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 19:57:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 19:57:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 19:57:27,516 INFO L87 Difference]: Start difference. First operand 2815 states and 3576 transitions. Second operand has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:57:30,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:30,687 INFO L93 Difference]: Finished difference Result 5594 states and 7116 transitions. [2022-11-16 19:57:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 19:57:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 89 [2022-11-16 19:57:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:30,700 INFO L225 Difference]: With dead ends: 5594 [2022-11-16 19:57:30,701 INFO L226 Difference]: Without dead ends: 2785 [2022-11-16 19:57:30,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=408, Invalid=2898, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 19:57:30,707 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 156 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:30,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 515 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 19:57:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-11-16 19:57:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2705. [2022-11-16 19:57:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.304706453178069) internal successors, (2689), 2064 states have internal predecessors, (2689), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-11-16 19:57:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3434 transitions. [2022-11-16 19:57:30,988 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3434 transitions. Word has length 89 [2022-11-16 19:57:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:30,989 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3434 transitions. [2022-11-16 19:57:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:57:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3434 transitions. [2022-11-16 19:57:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 19:57:30,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:30,992 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:31,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:31,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1277764109, now seen corresponding path program 1 times [2022-11-16 19:57:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:31,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837417840] [2022-11-16 19:57:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 19:57:31,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837417840] [2022-11-16 19:57:31,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837417840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426209853] [2022-11-16 19:57:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:31,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:31,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:31,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:31,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:57:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:31,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:57:31,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 19:57:31,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:31,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426209853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:31,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:31,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-16 19:57:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740723008] [2022-11-16 19:57:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:31,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:31,513 INFO L87 Difference]: Start difference. First operand 2705 states and 3434 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:31,935 INFO L93 Difference]: Finished difference Result 4711 states and 6014 transitions. [2022-11-16 19:57:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2022-11-16 19:57:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:31,947 INFO L225 Difference]: With dead ends: 4711 [2022-11-16 19:57:31,947 INFO L226 Difference]: Without dead ends: 2710 [2022-11-16 19:57:31,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:31,952 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:31,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 176 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-11-16 19:57:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2705. [2022-11-16 19:57:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.2979136341581756) internal successors, (2675), 2064 states have internal predecessors, (2675), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-11-16 19:57:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3420 transitions. [2022-11-16 19:57:32,333 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3420 transitions. Word has length 89 [2022-11-16 19:57:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:32,334 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3420 transitions. [2022-11-16 19:57:32,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3420 transitions. [2022-11-16 19:57:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 19:57:32,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:32,336 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:32,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 19:57:32,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1388552914, now seen corresponding path program 1 times [2022-11-16 19:57:32,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:32,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910858458] [2022-11-16 19:57:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 19:57:32,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:32,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910858458] [2022-11-16 19:57:32,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910858458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:32,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226359819] [2022-11-16 19:57:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:32,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:32,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:32,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:57:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:32,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:57:32,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:57:32,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:32,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226359819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:32,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:32,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 19:57:32,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989988740] [2022-11-16 19:57:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:32,812 INFO L87 Difference]: Start difference. First operand 2705 states and 3420 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:33,223 INFO L93 Difference]: Finished difference Result 5838 states and 7493 transitions. [2022-11-16 19:57:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-11-16 19:57:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:33,240 INFO L225 Difference]: With dead ends: 5838 [2022-11-16 19:57:33,241 INFO L226 Difference]: Without dead ends: 3837 [2022-11-16 19:57:33,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:57:33,247 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:33,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 203 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:57:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-11-16 19:57:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3773. [2022-11-16 19:57:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2835 states have (on average 1.2694885361552029) internal successors, (3599), 2838 states have internal predecessors, (3599), 546 states have call successors, (546), 392 states have call predecessors, (546), 391 states have return successors, (573), 543 states have call predecessors, (573), 543 states have call successors, (573) [2022-11-16 19:57:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4718 transitions. [2022-11-16 19:57:33,715 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4718 transitions. Word has length 89 [2022-11-16 19:57:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:33,715 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 4718 transitions. [2022-11-16 19:57:33,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4718 transitions. [2022-11-16 19:57:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 19:57:33,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:33,719 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:33,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:33,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 19:57:33,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:33,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1217251954, now seen corresponding path program 1 times [2022-11-16 19:57:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611176760] [2022-11-16 19:57:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:33,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 19:57:34,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611176760] [2022-11-16 19:57:34,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611176760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441017457] [2022-11-16 19:57:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:34,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:34,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:34,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:57:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:34,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:57:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 19:57:34,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:34,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441017457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:34,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:34,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-11-16 19:57:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709969056] [2022-11-16 19:57:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:34,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:57:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:57:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:57:34,181 INFO L87 Difference]: Start difference. First operand 3773 states and 4718 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 19:57:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:35,033 INFO L93 Difference]: Finished difference Result 10150 states and 12591 transitions. [2022-11-16 19:57:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:57:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 90 [2022-11-16 19:57:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:35,088 INFO L225 Difference]: With dead ends: 10150 [2022-11-16 19:57:35,088 INFO L226 Difference]: Without dead ends: 6383 [2022-11-16 19:57:35,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:57:35,103 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 199 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:35,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 237 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-11-16 19:57:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6379. [2022-11-16 19:57:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 4679 states have (on average 1.2280401795255396) internal successors, (5746), 4682 states have internal predecessors, (5746), 1000 states have call successors, (1000), 700 states have call predecessors, (1000), 699 states have return successors, (1057), 997 states have call predecessors, (1057), 997 states have call successors, (1057) [2022-11-16 19:57:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 7803 transitions. [2022-11-16 19:57:36,009 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 7803 transitions. Word has length 90 [2022-11-16 19:57:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:36,010 INFO L495 AbstractCegarLoop]: Abstraction has 6379 states and 7803 transitions. [2022-11-16 19:57:36,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 19:57:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 7803 transitions. [2022-11-16 19:57:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 19:57:36,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:36,012 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:36,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 19:57:36,217 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash 772094738, now seen corresponding path program 1 times [2022-11-16 19:57:36,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:36,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705615687] [2022-11-16 19:57:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:36,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 19:57:36,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:36,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705615687] [2022-11-16 19:57:36,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705615687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627880707] [2022-11-16 19:57:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:36,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:36,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:36,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:57:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:36,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:57:36,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:57:36,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:57:36,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627880707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:36,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:57:36,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-16 19:57:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955464574] [2022-11-16 19:57:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:57:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:57:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:57:36,559 INFO L87 Difference]: Start difference. First operand 6379 states and 7803 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:37,401 INFO L93 Difference]: Finished difference Result 12253 states and 15351 transitions. [2022-11-16 19:57:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:57:37,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 92 [2022-11-16 19:57:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:37,420 INFO L225 Difference]: With dead ends: 12253 [2022-11-16 19:57:37,420 INFO L226 Difference]: Without dead ends: 5880 [2022-11-16 19:57:37,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-16 19:57:37,432 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 151 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:37,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 425 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:57:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-16 19:57:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 4590. [2022-11-16 19:57:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3484 states have (on average 1.247703788748565) internal successors, (4347), 3487 states have internal predecessors, (4347), 631 states have call successors, (631), 475 states have call predecessors, (631), 474 states have return successors, (658), 628 states have call predecessors, (658), 628 states have call successors, (658) [2022-11-16 19:57:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5636 transitions. [2022-11-16 19:57:38,053 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5636 transitions. Word has length 92 [2022-11-16 19:57:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:38,053 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 5636 transitions. [2022-11-16 19:57:38,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5636 transitions. [2022-11-16 19:57:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 19:57:38,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:38,057 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:38,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 19:57:38,262 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -872335531, now seen corresponding path program 1 times [2022-11-16 19:57:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265306239] [2022-11-16 19:57:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 19:57:38,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:38,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265306239] [2022-11-16 19:57:38,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265306239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:38,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:38,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:57:38,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871840333] [2022-11-16 19:57:38,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:38,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:57:38,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:57:38,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:38,314 INFO L87 Difference]: Start difference. First operand 4590 states and 5636 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:38,924 INFO L93 Difference]: Finished difference Result 7625 states and 9413 transitions. [2022-11-16 19:57:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:57:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 98 [2022-11-16 19:57:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:38,943 INFO L225 Difference]: With dead ends: 7625 [2022-11-16 19:57:38,944 INFO L226 Difference]: Without dead ends: 3922 [2022-11-16 19:57:38,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:57:38,957 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 159 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:38,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 231 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-16 19:57:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3836. [2022-11-16 19:57:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 2928 states have (on average 1.2278005464480874) internal successors, (3595), 2931 states have internal predecessors, (3595), 517 states have call successors, (517), 391 states have call predecessors, (517), 390 states have return successors, (514), 514 states have call predecessors, (514), 514 states have call successors, (514) [2022-11-16 19:57:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4626 transitions. [2022-11-16 19:57:39,565 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4626 transitions. Word has length 98 [2022-11-16 19:57:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:39,566 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 4626 transitions. [2022-11-16 19:57:39,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 19:57:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4626 transitions. [2022-11-16 19:57:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 19:57:39,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:39,569 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:39,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 19:57:39,569 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:39,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2003794542, now seen corresponding path program 1 times [2022-11-16 19:57:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:39,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098338075] [2022-11-16 19:57:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 19:57:39,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:39,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098338075] [2022-11-16 19:57:39,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098338075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:39,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:39,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:57:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241108823] [2022-11-16 19:57:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:57:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:57:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:57:39,669 INFO L87 Difference]: Start difference. First operand 3836 states and 4626 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:40,588 INFO L93 Difference]: Finished difference Result 8288 states and 10404 transitions. [2022-11-16 19:57:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:57:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-11-16 19:57:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:40,609 INFO L225 Difference]: With dead ends: 8288 [2022-11-16 19:57:40,610 INFO L226 Difference]: Without dead ends: 6001 [2022-11-16 19:57:40,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:57:40,616 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 260 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:40,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 488 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:57:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-11-16 19:57:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4162. [2022-11-16 19:57:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 3176 states have (on average 1.223866498740554) internal successors, (3887), 3179 states have internal predecessors, (3887), 561 states have call successors, (561), 425 states have call predecessors, (561), 424 states have return successors, (558), 558 states have call predecessors, (558), 558 states have call successors, (558) [2022-11-16 19:57:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5006 transitions. [2022-11-16 19:57:41,142 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5006 transitions. Word has length 99 [2022-11-16 19:57:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:41,142 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5006 transitions. [2022-11-16 19:57:41,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:57:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5006 transitions. [2022-11-16 19:57:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 19:57:41,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:41,146 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 19:57:41,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 650173982, now seen corresponding path program 1 times [2022-11-16 19:57:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010645070] [2022-11-16 19:57:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 19:57:41,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:41,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010645070] [2022-11-16 19:57:41,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010645070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:41,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105552621] [2022-11-16 19:57:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:41,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:41,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 19:57:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:57:41,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 19:57:41,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 19:57:41,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105552621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:41,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463997148] [2022-11-16 19:57:41,867 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-16 19:57:41,867 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:57:41,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:57:41,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:57:41,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:57:44,996 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 109 for LOIs [2022-11-16 19:57:45,025 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 117 for LOIs [2022-11-16 19:57:45,047 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 117 for LOIs [2022-11-16 19:57:45,067 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2022-11-16 19:57:45,072 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 44 for LOIs [2022-11-16 19:57:45,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:57:52,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1463997148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:52,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:57:52,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [12, 4, 5] total 46 [2022-11-16 19:57:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879383639] [2022-11-16 19:57:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 19:57:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 19:57:52,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 19:57:52,077 INFO L87 Difference]: Start difference. First operand 4162 states and 5006 transitions. Second operand has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-16 19:58:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:58:10,253 INFO L93 Difference]: Finished difference Result 6427 states and 7780 transitions. [2022-11-16 19:58:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-16 19:58:10,254 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 100 [2022-11-16 19:58:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:58:10,267 INFO L225 Difference]: With dead ends: 6427 [2022-11-16 19:58:10,267 INFO L226 Difference]: Without dead ends: 4274 [2022-11-16 19:58:10,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=1287, Invalid=12285, Unknown=0, NotChecked=0, Total=13572 [2022-11-16 19:58:10,277 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 297 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:58:10,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 945 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 19:58:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-11-16 19:58:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4100. [2022-11-16 19:58:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 3128 states have (on average 1.2196291560102301) internal successors, (3815), 3131 states have internal predecessors, (3815), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-11-16 19:58:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 4920 transitions. [2022-11-16 19:58:10,923 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 4920 transitions. Word has length 100 [2022-11-16 19:58:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:58:10,924 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 4920 transitions. [2022-11-16 19:58:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-16 19:58:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 4920 transitions. [2022-11-16 19:58:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 19:58:10,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:58:10,927 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:58:10,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:58:11,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:11,138 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:58:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:58:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash -362763198, now seen corresponding path program 1 times [2022-11-16 19:58:11,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:58:11,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670609009] [2022-11-16 19:58:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:11,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:58:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:58:11,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:58:11,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670609009] [2022-11-16 19:58:11,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670609009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:58:11,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093388043] [2022-11-16 19:58:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:58:11,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:58:11,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:58:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:11,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:58:11,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:58:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 19:58:11,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 19:58:11,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093388043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1845147789] [2022-11-16 19:58:11,863 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-16 19:58:11,864 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:58:11,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:58:11,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:58:11,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:58:14,991 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-16 19:58:15,007 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-16 19:58:15,029 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-16 19:58:15,051 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-16 19:58:15,055 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-16 19:58:15,173 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:58:21,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1845147789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:58:21,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:58:21,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [12, 4, 5] total 47 [2022-11-16 19:58:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538375485] [2022-11-16 19:58:21,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:58:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 19:58:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:58:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 19:58:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 19:58:21,019 INFO L87 Difference]: Start difference. First operand 4100 states and 4920 transitions. Second operand has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:58:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:58:24,268 INFO L93 Difference]: Finished difference Result 6763 states and 8117 transitions. [2022-11-16 19:58:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 19:58:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 100 [2022-11-16 19:58:24,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:58:24,282 INFO L225 Difference]: With dead ends: 6763 [2022-11-16 19:58:24,282 INFO L226 Difference]: Without dead ends: 4150 [2022-11-16 19:58:24,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 19:58:24,290 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 116 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:58:24,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 407 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 19:58:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2022-11-16 19:58:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4109. [2022-11-16 19:58:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 3137 states have (on average 1.2193178195728402) internal successors, (3825), 3140 states have internal predecessors, (3825), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-11-16 19:58:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 4930 transitions. [2022-11-16 19:58:24,918 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 4930 transitions. Word has length 100 [2022-11-16 19:58:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:58:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 4109 states and 4930 transitions. [2022-11-16 19:58:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:58:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 4930 transitions. [2022-11-16 19:58:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 19:58:24,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:58:24,922 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:58:24,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:58:25,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:25,137 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:58:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:58:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 128718012, now seen corresponding path program 1 times [2022-11-16 19:58:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:58:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814804415] [2022-11-16 19:58:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:58:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-16 19:58:25,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:58:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814804415] [2022-11-16 19:58:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814804415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:58:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:58:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:58:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074987267] [2022-11-16 19:58:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:58:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:58:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:58:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:58:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:58:25,267 INFO L87 Difference]: Start difference. First operand 4109 states and 4930 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:58:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:58:25,894 INFO L93 Difference]: Finished difference Result 6555 states and 7921 transitions. [2022-11-16 19:58:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:58:25,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-16 19:58:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:58:25,905 INFO L225 Difference]: With dead ends: 6555 [2022-11-16 19:58:25,905 INFO L226 Difference]: Without dead ends: 2946 [2022-11-16 19:58:25,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:58:25,914 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 73 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:58:25,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 229 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:58:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-11-16 19:58:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2503. [2022-11-16 19:58:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1879 states have (on average 1.2038318254390634) internal successors, (2262), 1886 states have internal predecessors, (2262), 360 states have call successors, (360), 259 states have call predecessors, (360), 263 states have return successors, (380), 358 states have call predecessors, (380), 358 states have call successors, (380) [2022-11-16 19:58:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3002 transitions. [2022-11-16 19:58:26,400 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3002 transitions. Word has length 102 [2022-11-16 19:58:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:58:26,401 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3002 transitions. [2022-11-16 19:58:26,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 19:58:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3002 transitions. [2022-11-16 19:58:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 19:58:26,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:58:26,404 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:58:26,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 19:58:26,404 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:58:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:58:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1717133426, now seen corresponding path program 1 times [2022-11-16 19:58:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:58:26,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341542295] [2022-11-16 19:58:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:58:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 19:58:26,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:58:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341542295] [2022-11-16 19:58:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341542295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:58:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054221315] [2022-11-16 19:58:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:58:26,699 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:58:26,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:58:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:26,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:58:26,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:58:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 19:58:26,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 19:58:27,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054221315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373912953] [2022-11-16 19:58:27,081 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-16 19:58:27,081 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:58:27,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:58:27,083 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:58:27,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:58:30,974 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-16 19:58:30,992 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-16 19:58:31,026 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-16 19:58:31,057 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-16 19:58:31,062 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-16 19:58:31,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:58:40,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1373912953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:58:40,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:58:40,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [12, 5, 6] total 50 [2022-11-16 19:58:40,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849259357] [2022-11-16 19:58:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:58:40,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 19:58:40,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:58:40,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 19:58:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 19:58:40,840 INFO L87 Difference]: Start difference. First operand 2503 states and 3002 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:58:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:58:45,996 INFO L93 Difference]: Finished difference Result 3748 states and 4521 transitions. [2022-11-16 19:58:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 19:58:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 101 [2022-11-16 19:58:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:58:46,006 INFO L225 Difference]: With dead ends: 3748 [2022-11-16 19:58:46,006 INFO L226 Difference]: Without dead ends: 2480 [2022-11-16 19:58:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 254 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=451, Invalid=3709, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 19:58:46,011 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 92 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:58:46,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 643 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 19:58:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-16 19:58:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2433. [2022-11-16 19:58:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1827 states have (on average 1.2014230979748222) internal successors, (2195), 1834 states have internal predecessors, (2195), 350 states have call successors, (350), 251 states have call predecessors, (350), 255 states have return successors, (370), 348 states have call predecessors, (370), 348 states have call successors, (370) [2022-11-16 19:58:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2915 transitions. [2022-11-16 19:58:46,463 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2915 transitions. Word has length 101 [2022-11-16 19:58:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:58:46,464 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 2915 transitions. [2022-11-16 19:58:46,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 19:58:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2915 transitions. [2022-11-16 19:58:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 19:58:46,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:58:46,467 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:58:46,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:58:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:46,673 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:58:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:58:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1461258897, now seen corresponding path program 1 times [2022-11-16 19:58:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:58:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167689770] [2022-11-16 19:58:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:58:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 19:58:46,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:58:46,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167689770] [2022-11-16 19:58:46,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167689770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:58:46,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802531232] [2022-11-16 19:58:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:46,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:46,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:58:46,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:58:46,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 19:58:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:58:46,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:58:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 19:58:47,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 19:58:47,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802531232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:47,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241004831] [2022-11-16 19:58:47,491 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-16 19:58:47,491 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:58:47,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:58:47,492 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:58:47,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:58:50,575 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-16 19:58:50,578 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-16 19:58:50,596 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-16 19:58:50,614 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-16 19:58:50,631 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-16 19:58:50,636 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-16 19:58:50,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:58:59,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '233901#(and (<= 0 ~data_0~0) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (= ~data_1~0 0) (not (= ~num~0 1)) (< ~i~0 ~max_loop~0) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:58:59,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:58:59,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:58:59,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 5 [2022-11-16 19:58:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700055808] [2022-11-16 19:58:59,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:58:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:58:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:58:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:58:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 19:58:59,377 INFO L87 Difference]: Start difference. First operand 2433 states and 2915 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 19:59:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:59:00,023 INFO L93 Difference]: Finished difference Result 4669 states and 5817 transitions. [2022-11-16 19:59:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:59:00,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 103 [2022-11-16 19:59:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:59:00,035 INFO L225 Difference]: With dead ends: 4669 [2022-11-16 19:59:00,035 INFO L226 Difference]: Without dead ends: 3200 [2022-11-16 19:59:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 262 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 19:59:00,041 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 119 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:59:00,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 559 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:59:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-11-16 19:59:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 2357. [2022-11-16 19:59:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1769 states have (on average 1.1978518937252685) internal successors, (2119), 1776 states have internal predecessors, (2119), 340 states have call successors, (340), 243 states have call predecessors, (340), 247 states have return successors, (359), 338 states have call predecessors, (359), 338 states have call successors, (359) [2022-11-16 19:59:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2818 transitions. [2022-11-16 19:59:00,546 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2818 transitions. Word has length 103 [2022-11-16 19:59:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:59:00,547 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 2818 transitions. [2022-11-16 19:59:00,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 19:59:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2818 transitions. [2022-11-16 19:59:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 19:59:00,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:59:00,550 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:59:00,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:59:00,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:59:00,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:59:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:59:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1612043928, now seen corresponding path program 1 times [2022-11-16 19:59:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:59:00,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296061379] [2022-11-16 19:59:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:00,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:59:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 19:59:01,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:59:01,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296061379] [2022-11-16 19:59:01,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296061379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:59:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820940566] [2022-11-16 19:59:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:01,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:59:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:59:01,091 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:59:01,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:59:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:01,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:59:01,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:59:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 19:59:01,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:59:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-16 19:59:01,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820940566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:59:01,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [938535529] [2022-11-16 19:59:01,495 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-16 19:59:01,495 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:59:01,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:59:01,496 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:59:01,496 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:59:04,811 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 73 for LOIs [2022-11-16 19:59:04,823 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-16 19:59:04,851 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-16 19:59:04,882 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-16 19:59:04,900 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-16 19:59:04,903 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-16 19:59:05,000 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:59:14,797 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '244949#(and (<= 0 ~data_0~0) (= ~i~0 0) (= ~e~0 0) (= ~P_1_ev~0 0) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (= ~C_1_pc~0 0) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (not (= ~num~0 1)) (= ~timer~0 0) (= ~C_1_st~0 1) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:59:14,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:59:14,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:59:14,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 6] total 16 [2022-11-16 19:59:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044346456] [2022-11-16 19:59:14,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:59:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 19:59:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:59:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 19:59:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 19:59:14,800 INFO L87 Difference]: Start difference. First operand 2357 states and 2818 transitions. Second operand has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-11-16 19:59:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:59:19,383 INFO L93 Difference]: Finished difference Result 5787 states and 7176 transitions. [2022-11-16 19:59:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-16 19:59:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) Word has length 110 [2022-11-16 19:59:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:59:19,393 INFO L225 Difference]: With dead ends: 5787 [2022-11-16 19:59:19,393 INFO L226 Difference]: Without dead ends: 3438 [2022-11-16 19:59:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 286 SyntacticMatches, 19 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11055 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1861, Invalid=24221, Unknown=0, NotChecked=0, Total=26082 [2022-11-16 19:59:19,404 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1215 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:59:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2733 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 19:59:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-11-16 19:59:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2299. [2022-11-16 19:59:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1751 states have (on average 1.2135922330097086) internal successors, (2125), 1761 states have internal predecessors, (2125), 310 states have call successors, (310), 229 states have call predecessors, (310), 237 states have return successors, (344), 308 states have call predecessors, (344), 308 states have call successors, (344) [2022-11-16 19:59:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2779 transitions. [2022-11-16 19:59:19,844 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2779 transitions. Word has length 110 [2022-11-16 19:59:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:59:19,844 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2779 transitions. [2022-11-16 19:59:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-11-16 19:59:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2779 transitions. [2022-11-16 19:59:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-16 19:59:19,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:59:19,848 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:59:19,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:59:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 19:59:20,054 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:59:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:59:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash 562120164, now seen corresponding path program 1 times [2022-11-16 19:59:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:59:20,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575280295] [2022-11-16 19:59:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:20,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:59:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 19:59:20,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:59:20,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575280295] [2022-11-16 19:59:20,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575280295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:59:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311285904] [2022-11-16 19:59:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:59:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:59:20,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:59:20,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 19:59:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:20,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 19:59:20,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:59:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-16 19:59:20,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:59:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 91 proven. 11 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-16 19:59:20,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311285904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:59:20,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1254722303] [2022-11-16 19:59:20,737 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-16 19:59:20,737 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:59:20,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:59:20,738 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:59:20,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:59:24,324 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-16 19:59:24,326 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-16 19:59:24,346 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-16 19:59:24,363 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-16 19:59:24,383 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-16 19:59:24,388 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-16 19:59:24,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:59:32,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '258011#(and (<= 0 ~data_0~0) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (not (= ~num~0 1)) (< ~i~0 ~max_loop~0) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:59:32,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:59:32,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:59:32,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 11 [2022-11-16 19:59:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089900910] [2022-11-16 19:59:32,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:59:32,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:59:32,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:59:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:59:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2349, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 19:59:32,612 INFO L87 Difference]: Start difference. First operand 2299 states and 2779 transitions. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-16 19:59:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:59:33,938 INFO L93 Difference]: Finished difference Result 7211 states and 8955 transitions. [2022-11-16 19:59:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:59:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) Word has length 158 [2022-11-16 19:59:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:59:33,954 INFO L225 Difference]: With dead ends: 7211 [2022-11-16 19:59:33,955 INFO L226 Difference]: Without dead ends: 4865 [2022-11-16 19:59:33,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 439 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=447, Invalid=4109, Unknown=0, NotChecked=0, Total=4556 [2022-11-16 19:59:33,961 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 324 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:59:33,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 786 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:59:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2022-11-16 19:59:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 2721. [2022-11-16 19:59:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1998 states have (on average 1.1881881881881882) internal successors, (2374), 2047 states have internal predecessors, (2374), 403 states have call successors, (403), 272 states have call predecessors, (403), 319 states have return successors, (629), 401 states have call predecessors, (629), 401 states have call successors, (629) [2022-11-16 19:59:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3406 transitions. [2022-11-16 19:59:34,523 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3406 transitions. Word has length 158 [2022-11-16 19:59:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:59:34,523 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3406 transitions. [2022-11-16 19:59:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-16 19:59:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3406 transitions. [2022-11-16 19:59:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-16 19:59:34,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:59:34,530 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:59:34,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:59:34,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 19:59:34,736 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:59:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:59:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash 733252937, now seen corresponding path program 1 times [2022-11-16 19:59:34,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:59:34,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303762403] [2022-11-16 19:59:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:59:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 84 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-16 19:59:34,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:59:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303762403] [2022-11-16 19:59:34,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303762403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:59:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018147999] [2022-11-16 19:59:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:34,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:59:34,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:59:34,887 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:59:34,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 19:59:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:59:35,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:59:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:59:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 19:59:35,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:59:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-16 19:59:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018147999] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 19:59:35,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:59:35,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 7 [2022-11-16 19:59:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698066157] [2022-11-16 19:59:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:59:35,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:59:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:59:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:59:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:59:35,236 INFO L87 Difference]: Start difference. First operand 2721 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 19:59:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:59:35,834 INFO L93 Difference]: Finished difference Result 5382 states and 6780 transitions. [2022-11-16 19:59:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:59:35,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 169 [2022-11-16 19:59:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:59:35,844 INFO L225 Difference]: With dead ends: 5382 [2022-11-16 19:59:35,845 INFO L226 Difference]: Without dead ends: 2826 [2022-11-16 19:59:35,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:59:35,854 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:59:35,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:59:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-11-16 19:59:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2692. [2022-11-16 19:59:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2004 states have (on average 1.1651696606786428) internal successors, (2335), 2032 states have internal predecessors, (2335), 374 states have call successors, (374), 287 states have call predecessors, (374), 313 states have return successors, (426), 372 states have call predecessors, (426), 372 states have call successors, (426) [2022-11-16 19:59:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3135 transitions. [2022-11-16 19:59:36,350 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3135 transitions. Word has length 169 [2022-11-16 19:59:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:59:36,351 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 3135 transitions. [2022-11-16 19:59:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 19:59:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3135 transitions. [2022-11-16 19:59:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-16 19:59:36,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:59:36,355 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:59:36,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:59:36,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 19:59:36,561 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:59:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:59:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 379124548, now seen corresponding path program 1 times [2022-11-16 19:59:36,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:59:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138741375] [2022-11-16 19:59:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:59:36,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:59:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:59:36,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:59:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:59:36,659 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:59:36,659 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:59:36,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 19:59:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 19:59:36,671 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:59:36,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:59:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:59:36 BoogieIcfgContainer [2022-11-16 19:59:36,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:59:36,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:59:36,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:59:36,826 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:59:36,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:57:06" (3/4) ... [2022-11-16 19:59:36,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 19:59:36,939 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:59:36,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:59:36,940 INFO L158 Benchmark]: Toolchain (without parser) took 151304.90ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 99.9MB in the beginning and 1.0GB in the end (delta: -908.2MB). Peak memory consumption was 186.9MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,940 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:59:36,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.61ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 104.4MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.11ms. Allocated memory is still 132.1MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,941 INFO L158 Benchmark]: Boogie Preprocessor took 29.26ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,941 INFO L158 Benchmark]: RCFGBuilder took 771.49ms. Allocated memory is still 132.1MB. Free memory was 100.5MB in the beginning and 73.3MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,942 INFO L158 Benchmark]: TraceAbstraction took 149869.90ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 72.5MB in the beginning and 1.0GB in the end (delta: -952.4MB). Peak memory consumption was 143.8MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,942 INFO L158 Benchmark]: Witness Printer took 114.33ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 19:59:36,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.61ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 104.4MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.11ms. Allocated memory is still 132.1MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.26ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 771.49ms. Allocated memory is still 132.1MB. Free memory was 100.5MB in the beginning and 73.3MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 149869.90ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 72.5MB in the beginning and 1.0GB in the end (delta: -952.4MB). Peak memory consumption was 143.8MB. Max. memory is 16.1GB. * Witness Printer took 114.33ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L134] int C_1_i ; [L28] int e ; [L74] int P_1_pc; [L26] int num ; [L75] int P_1_st ; [L27] int i ; [L30] char data_0 ; [L136] int C_1_pr ; [L133] int C_1_st ; [L31] char data_1 ; [L25] int max_loop ; [L29] int timer ; [L77] int P_1_ev ; [L132] int C_1_pc ; [L135] int C_1_ev ; [L76] int P_1_i ; [L500] int count ; [L501] int __retres2 ; [L505] num = 0 [L506] i = 0 [L507] max_loop = 2 [L509] timer = 0 [L510] P_1_pc = 0 [L511] C_1_pc = 0 [L513] count = 0 [L514] CALL init_model() [L493] P_1_i = 1 [L494] C_1_i = 1 [L514] RET init_model() [L515] CALL start_simulation() [L431] int kernel_st ; [L432] int tmp ; [L433] int tmp___0 ; [L437] kernel_st = 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L438] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L439] CALL init_threads() [L236] COND TRUE (int )P_1_i == 1 [L237] P_1_st = 0 [L241] COND TRUE (int )C_1_i == 1 [L242] C_1_st = 0 [L439] RET init_threads() [L440] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L441] CALL activate_threads() VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L117] COND FALSE !((int )P_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L127] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L199] COND FALSE !((int )C_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L219] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L441] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L442] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND FALSE !(\read(tmp)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp=0, tmp___2=1] [L304] COND TRUE (int )C_1_st == 0 [L306] tmp___1 = __VERIFIER_nondet_int() [L308] COND TRUE \read(tmp___1) [L310] C_1_st = 1 [L311] CALL C_1() [L138] char c ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L141] COND TRUE (int )C_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L156] COND TRUE i < max_loop VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L158] COND TRUE num == 0 [L159] timer = 1 [L160] i += 1 [L161] C_1_pc = 1 [L162] C_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L311] RET C_1() [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND TRUE (int )P_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND TRUE i___0 == 0 [L60] data_0 = c VAL [\old(c)=65, \old(i___0)=0, c=65, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L453] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L456] kernel_st = 3 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L457] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L459] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [\old(c)=65, \old(i___0)=1, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L62] COND TRUE i___0 == 1 [L63] data_1 = c VAL [\old(c)=65, \old(i___0)=1, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L453] FCALL update_channels() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L456] kernel_st = 3 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L457] FCALL fire_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L459] FCALL reset_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [\old(c)=65, \old(i___0)=2, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L62] COND FALSE !(i___0 == 1) VAL [\old(c)=65, \old(i___0)=2, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L66] CALL error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L19] reach_error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 149.6s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 45.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4764 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4672 mSDsluCounter, 11442 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8109 mSDsCounter, 1293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12771 IncrementalHoareTripleChecker+Invalid, 14064 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1293 mSolverCounterUnsat, 3333 mSDtfsCounter, 12771 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3737 GetRequests, 3002 SyntacticMatches, 66 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21357 ImplicationChecksByTransitivity, 78.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6379occurred in iteration=15, InterpolantAutomatonStates: 442, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.0s AutomataMinimizationTime, 26 MinimizatonAttempts, 9208 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 3928 NumberOfCodeBlocks, 3928 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 4627 ConstructedInterpolants, 0 QuantifiedInterpolants, 10212 SizeOfPredicates, 23 NumberOfNonLiveVariables, 5150 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 3000/3623 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: OVERALL_TIME: 14.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 24, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 362, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 410, TOOLS_POST_TIME: 5.6s, TOOLS_POST_CALL_APPLICATIONS: 265, TOOLS_POST_CALL_TIME: 3.7s, TOOLS_POST_RETURN_APPLICATIONS: 220, TOOLS_POST_RETURN_TIME: 1.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 895, TOOLS_QUANTIFIERELIM_TIME: 10.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 981, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 280, DOMAIN_JOIN_TIME: 3.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 362, DOMAIN_ISBOTTOM_TIME: 0.4s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 8.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 8.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 220, CALL_SUMMARIZER_CACHE_MISSES: 20, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 6303, DAG_COMPRESSION_RETAINED_NODES: 779, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 19:59:36,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ecb849a-5d9e-4053-a718-5150035ac72e/bin/utaipan-Xvt2sAort0/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE