./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/kundu1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 19:42:58,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:42:58,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:42:58,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:42:58,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:42:58,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:42:58,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:42:58,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:42:58,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:42:58,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:42:58,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:42:58,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:42:58,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:42:58,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:42:58,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:42:58,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:42:58,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:42:58,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:42:58,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:42:58,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:42:58,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:42:58,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:42:58,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:42:58,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:42:58,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:42:58,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:42:58,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:42:58,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:42:58,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:42:58,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:42:58,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:42:58,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:42:58,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:42:58,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:42:58,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:42:58,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:42:58,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:42:58,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:42:58,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:42:58,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:42:58,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:42:58,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:42:58,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:42:58,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:42:58,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:42:58,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:42:58,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:42:58,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:42:58,314 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:42:58,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:42:58,314 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:42:58,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:42:58,316 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:42:58,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:42:58,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:42:58,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:42:58,317 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:42:58,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:42:58,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:42:58,317 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:42:58,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:42:58,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:42:58,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:42:58,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:42:58,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:42:58,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:42:58,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:42:58,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:42:58,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:42:58,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:42:58,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:42:58,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:42:58,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:42:58,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:42:58,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:42:58,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:42:58,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:42:58,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:42:58,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:42:58,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:42:58,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:42:58,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:42:58,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:42:58,324 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_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 [2022-11-20 19:42:58,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:42:58,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:42:58,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:42:58,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:42:58,695 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:42:58,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-20 19:43:01,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:43:02,092 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:43:02,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-20 19:43:02,102 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/data/cffc9a005/7a435605c3e04cafbb791dd63d360186/FLAGc225d273f [2022-11-20 19:43:02,118 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/data/cffc9a005/7a435605c3e04cafbb791dd63d360186 [2022-11-20 19:43:02,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:43:02,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:43:02,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:02,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:43:02,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:43:02,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bc81c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02, skipping insertion in model container [2022-11-20 19:43:02,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:43:02,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:43:02,327 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-20 19:43:02,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:02,400 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:43:02,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-20 19:43:02,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:02,459 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:43:02,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02 WrapperNode [2022-11-20 19:43:02,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:02,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:02,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:43:02,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:43:02,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,532 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 257 [2022-11-20 19:43:02,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:02,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:43:02,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:43:02,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:43:02,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:43:02,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:43:02,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:43:02,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:43:02,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (1/1) ... [2022-11-20 19:43:02,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:43:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:02,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:43:02,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:43:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:43:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-20 19:43:02,690 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-20 19:43:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 19:43:02,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 19:43:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 19:43:02,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 19:43:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 19:43:02,691 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 19:43:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 19:43:02,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 19:43:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:43:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 19:43:02,692 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 19:43:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:43:02,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:43:02,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:43:02,794 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:43:03,165 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:43:03,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:43:03,302 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 19:43:03,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:03 BoogieIcfgContainer [2022-11-20 19:43:03,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:43:03,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:43:03,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:43:03,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:43:03,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:43:02" (1/3) ... [2022-11-20 19:43:03,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd10c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:03, skipping insertion in model container [2022-11-20 19:43:03,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:02" (2/3) ... [2022-11-20 19:43:03,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd10c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:03, skipping insertion in model container [2022-11-20 19:43:03,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:03" (3/3) ... [2022-11-20 19:43:03,317 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu1.cil.c [2022-11-20 19:43:03,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:43:03,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:43:03,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:43:03,416 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;@6730b243, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:43:03,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:43:03,422 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) [2022-11-20 19:43:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 19:43:03,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:03,438 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] [2022-11-20 19:43:03,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1624735659, now seen corresponding path program 1 times [2022-11-20 19:43:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723617584] [2022-11-20 19:43:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:03,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:03,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723617584] [2022-11-20 19:43:03,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723617584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:03,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:03,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500162129] [2022-11-20 19:43:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:03,826 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) [2022-11-20 19:43:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:04,294 INFO L93 Difference]: Finished difference Result 209 states and 305 transitions. [2022-11-20 19:43:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:43:04,304 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 [2022-11-20 19:43:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:04,317 INFO L225 Difference]: With dead ends: 209 [2022-11-20 19:43:04,317 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 19:43:04,322 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 [2022-11-20 19:43:04,326 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:43:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 264 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:43:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 19:43:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2022-11-20 19:43:04,402 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) [2022-11-20 19:43:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2022-11-20 19:43:04,412 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 34 [2022-11-20 19:43:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:04,414 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2022-11-20 19:43:04,414 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) [2022-11-20 19:43:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2022-11-20 19:43:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 19:43:04,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:04,416 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] [2022-11-20 19:43:04,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:43:04,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:04,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash 34340682, now seen corresponding path program 1 times [2022-11-20 19:43:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:04,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118990309] [2022-11-20 19:43:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:04,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:04,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118990309] [2022-11-20 19:43:04,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118990309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:04,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:04,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:04,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182035468] [2022-11-20 19:43:04,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:04,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:04,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:04,556 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) [2022-11-20 19:43:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:04,827 INFO L93 Difference]: Finished difference Result 366 states and 507 transitions. [2022-11-20 19:43:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:43:04,828 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 [2022-11-20 19:43:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:04,831 INFO L225 Difference]: With dead ends: 366 [2022-11-20 19:43:04,831 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 19:43:04,834 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 [2022-11-20 19:43:04,836 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 [2022-11-20 19:43:04,837 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] [2022-11-20 19:43:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 19:43:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2022-11-20 19:43:04,869 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) [2022-11-20 19:43:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2022-11-20 19:43:04,872 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 300 transitions. Word has length 34 [2022-11-20 19:43:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:04,872 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 300 transitions. [2022-11-20 19:43:04,873 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) [2022-11-20 19:43:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 300 transitions. [2022-11-20 19:43:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 19:43:04,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:04,875 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] [2022-11-20 19:43:04,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:43:04,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:04,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash -28804500, now seen corresponding path program 1 times [2022-11-20 19:43:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:04,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819761044] [2022-11-20 19:43:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:05,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:05,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819761044] [2022-11-20 19:43:05,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819761044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:05,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:05,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139964702] [2022-11-20 19:43:05,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:05,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:05,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:05,058 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) [2022-11-20 19:43:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:05,262 INFO L93 Difference]: Finished difference Result 607 states and 835 transitions. [2022-11-20 19:43:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:43:05,263 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 [2022-11-20 19:43:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:05,267 INFO L225 Difference]: With dead ends: 607 [2022-11-20 19:43:05,267 INFO L226 Difference]: Without dead ends: 435 [2022-11-20 19:43:05,268 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 [2022-11-20 19:43:05,270 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 [2022-11-20 19:43:05,290 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] [2022-11-20 19:43:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-20 19:43:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 328. [2022-11-20 19:43:05,359 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) [2022-11-20 19:43:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 437 transitions. [2022-11-20 19:43:05,363 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 437 transitions. Word has length 35 [2022-11-20 19:43:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:05,364 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 437 transitions. [2022-11-20 19:43:05,364 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) [2022-11-20 19:43:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 437 transitions. [2022-11-20 19:43:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 19:43:05,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:05,367 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] [2022-11-20 19:43:05,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:43:05,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1374328358, now seen corresponding path program 1 times [2022-11-20 19:43:05,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504930208] [2022-11-20 19:43:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:05,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:05,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504930208] [2022-11-20 19:43:05,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504930208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:05,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:05,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952737387] [2022-11-20 19:43:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:05,516 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) [2022-11-20 19:43:05,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:05,721 INFO L93 Difference]: Finished difference Result 509 states and 680 transitions. [2022-11-20 19:43:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:43:05,722 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 [2022-11-20 19:43:05,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:05,729 INFO L225 Difference]: With dead ends: 509 [2022-11-20 19:43:05,729 INFO L226 Difference]: Without dead ends: 392 [2022-11-20 19:43:05,731 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 [2022-11-20 19:43:05,742 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 [2022-11-20 19:43:05,743 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] [2022-11-20 19:43:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-20 19:43:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 383. [2022-11-20 19:43:05,814 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) [2022-11-20 19:43:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 510 transitions. [2022-11-20 19:43:05,821 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 510 transitions. Word has length 43 [2022-11-20 19:43:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:05,822 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 510 transitions. [2022-11-20 19:43:05,822 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) [2022-11-20 19:43:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 510 transitions. [2022-11-20 19:43:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 19:43:05,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:05,833 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] [2022-11-20 19:43:05,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:43:05,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1322400223, now seen corresponding path program 1 times [2022-11-20 19:43:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342605216] [2022-11-20 19:43:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:06,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:06,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342605216] [2022-11-20 19:43:06,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342605216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:06,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:06,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:43:06,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842799297] [2022-11-20 19:43:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:06,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:43:06,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:06,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:43:06,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:43:06,084 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) [2022-11-20 19:43:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:06,540 INFO L93 Difference]: Finished difference Result 1013 states and 1383 transitions. [2022-11-20 19:43:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:43:06,541 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 [2022-11-20 19:43:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:06,546 INFO L225 Difference]: With dead ends: 1013 [2022-11-20 19:43:06,546 INFO L226 Difference]: Without dead ends: 735 [2022-11-20 19:43:06,548 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 [2022-11-20 19:43:06,549 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 [2022-11-20 19:43:06,549 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] [2022-11-20 19:43:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-20 19:43:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 539. [2022-11-20 19:43:06,622 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) [2022-11-20 19:43:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 716 transitions. [2022-11-20 19:43:06,626 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 716 transitions. Word has length 46 [2022-11-20 19:43:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:06,627 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 716 transitions. [2022-11-20 19:43:06,627 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) [2022-11-20 19:43:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 716 transitions. [2022-11-20 19:43:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 19:43:06,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:06,629 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] [2022-11-20 19:43:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:43:06,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1133597288, now seen corresponding path program 1 times [2022-11-20 19:43:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:06,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026824032] [2022-11-20 19:43:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:06,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:43:06,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:06,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026824032] [2022-11-20 19:43:06,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026824032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:06,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:06,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:43:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313401646] [2022-11-20 19:43:06,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:06,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:43:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:43:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:43:06,774 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) [2022-11-20 19:43:07,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:07,181 INFO L93 Difference]: Finished difference Result 1556 states and 2057 transitions. [2022-11-20 19:43:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:43:07,183 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 [2022-11-20 19:43:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:07,190 INFO L225 Difference]: With dead ends: 1556 [2022-11-20 19:43:07,190 INFO L226 Difference]: Without dead ends: 1023 [2022-11-20 19:43:07,192 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 [2022-11-20 19:43:07,193 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 182 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-20 19:43:07,193 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] [2022-11-20 19:43:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-11-20 19:43:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 992. [2022-11-20 19:43:07,325 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) [2022-11-20 19:43:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1297 transitions. [2022-11-20 19:43:07,330 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1297 transitions. Word has length 48 [2022-11-20 19:43:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1297 transitions. [2022-11-20 19:43:07,331 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) [2022-11-20 19:43:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1297 transitions. [2022-11-20 19:43:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 19:43:07,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:07,333 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] [2022-11-20 19:43:07,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:43:07,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash 175129522, now seen corresponding path program 1 times [2022-11-20 19:43:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:07,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059321791] [2022-11-20 19:43:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:07,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:43:07,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:07,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059321791] [2022-11-20 19:43:07,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059321791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:07,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:07,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:43:07,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372262747] [2022-11-20 19:43:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:43:07,376 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) [2022-11-20 19:43:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:07,590 INFO L93 Difference]: Finished difference Result 2491 states and 3230 transitions. [2022-11-20 19:43:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:07,591 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 [2022-11-20 19:43:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:07,598 INFO L225 Difference]: With dead ends: 2491 [2022-11-20 19:43:07,599 INFO L226 Difference]: Without dead ends: 1505 [2022-11-20 19:43:07,601 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 [2022-11-20 19:43:07,602 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 [2022-11-20 19:43:07,603 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] [2022-11-20 19:43:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-20 19:43:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1235. [2022-11-20 19:43:07,776 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) [2022-11-20 19:43:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1606 transitions. [2022-11-20 19:43:07,784 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1606 transitions. Word has length 49 [2022-11-20 19:43:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:07,784 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1606 transitions. [2022-11-20 19:43:07,785 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) [2022-11-20 19:43:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1606 transitions. [2022-11-20 19:43:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 19:43:07,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:07,787 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] [2022-11-20 19:43:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:43:07,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -379002054, now seen corresponding path program 1 times [2022-11-20 19:43:07,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:07,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326184180] [2022-11-20 19:43:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:07,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:43:07,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:07,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326184180] [2022-11-20 19:43:07,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326184180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:07,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:07,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:43:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004357265] [2022-11-20 19:43:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:43:07,850 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) [2022-11-20 19:43:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:08,096 INFO L93 Difference]: Finished difference Result 2860 states and 3725 transitions. [2022-11-20 19:43:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:08,098 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 [2022-11-20 19:43:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:08,107 INFO L225 Difference]: With dead ends: 2860 [2022-11-20 19:43:08,107 INFO L226 Difference]: Without dead ends: 1631 [2022-11-20 19:43:08,111 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 [2022-11-20 19:43:08,112 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 [2022-11-20 19:43:08,112 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] [2022-11-20 19:43:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-11-20 19:43:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1437. [2022-11-20 19:43:08,303 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) [2022-11-20 19:43:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1864 transitions. [2022-11-20 19:43:08,311 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1864 transitions. Word has length 50 [2022-11-20 19:43:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:08,311 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1864 transitions. [2022-11-20 19:43:08,312 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) [2022-11-20 19:43:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1864 transitions. [2022-11-20 19:43:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 19:43:08,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:08,315 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] [2022-11-20 19:43:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 19:43:08,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1557181953, now seen corresponding path program 1 times [2022-11-20 19:43:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675727340] [2022-11-20 19:43:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:43:08,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675727340] [2022-11-20 19:43:08,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675727340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387138428] [2022-11-20 19:43:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:08,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:08,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:08,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:43:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:08,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 19:43:08,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:43:09,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387138428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:09,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:09,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-11-20 19:43:09,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050594243] [2022-11-20 19:43:09,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:09,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:43:09,080 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) [2022-11-20 19:43:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:09,424 INFO L93 Difference]: Finished difference Result 3838 states and 4994 transitions. [2022-11-20 19:43:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:09,424 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 [2022-11-20 19:43:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:09,437 INFO L225 Difference]: With dead ends: 3838 [2022-11-20 19:43:09,438 INFO L226 Difference]: Without dead ends: 2828 [2022-11-20 19:43:09,442 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 [2022-11-20 19:43:09,443 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 49 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:43:09,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:43:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-11-20 19:43:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2815. [2022-11-20 19:43:09,804 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) [2022-11-20 19:43:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3632 transitions. [2022-11-20 19:43:09,820 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3632 transitions. Word has length 88 [2022-11-20 19:43:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:09,821 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3632 transitions. [2022-11-20 19:43:09,821 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) [2022-11-20 19:43:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3632 transitions. [2022-11-20 19:43:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 19:43:09,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:09,825 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] [2022-11-20 19:43:09,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:10,033 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -207634656, now seen corresponding path program 1 times [2022-11-20 19:43:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183505018] [2022-11-20 19:43:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:43:10,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:10,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183505018] [2022-11-20 19:43:10,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183505018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:10,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943253608] [2022-11-20 19:43:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:10,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:10,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:43:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:43:10,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:43:10,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943253608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:10,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:10,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-20 19:43:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413092102] [2022-11-20 19:43:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:10,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:43:10,697 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) [2022-11-20 19:43:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:11,042 INFO L93 Difference]: Finished difference Result 4830 states and 6297 transitions. [2022-11-20 19:43:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:11,043 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 [2022-11-20 19:43:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:11,058 INFO L225 Difference]: With dead ends: 4830 [2022-11-20 19:43:11,058 INFO L226 Difference]: Without dead ends: 2843 [2022-11-20 19:43:11,063 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 [2022-11-20 19:43:11,068 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 [2022-11-20 19:43:11,069 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] [2022-11-20 19:43:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-11-20 19:43:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2815. [2022-11-20 19:43:11,414 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) [2022-11-20 19:43:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3604 transitions. [2022-11-20 19:43:11,425 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3604 transitions. Word has length 88 [2022-11-20 19:43:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:11,427 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3604 transitions. [2022-11-20 19:43:11,427 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) [2022-11-20 19:43:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3604 transitions. [2022-11-20 19:43:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 19:43:11,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:11,436 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] [2022-11-20 19:43:11,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:11,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 49377354, now seen corresponding path program 1 times [2022-11-20 19:43:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:11,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066682679] [2022-11-20 19:43:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 19:43:11,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:11,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066682679] [2022-11-20 19:43:11,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066682679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355349945] [2022-11-20 19:43:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:11,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:11,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:11,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:11,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:43:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 19:43:11,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:43:11,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:11,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355349945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:11,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:11,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-20 19:43:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475271525] [2022-11-20 19:43:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:11,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:11,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:11,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:43:11,998 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) [2022-11-20 19:43:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:12,315 INFO L93 Difference]: Finished difference Result 4816 states and 6236 transitions. [2022-11-20 19:43:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:12,316 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 [2022-11-20 19:43:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:12,330 INFO L225 Difference]: With dead ends: 4816 [2022-11-20 19:43:12,330 INFO L226 Difference]: Without dead ends: 2815 [2022-11-20 19:43:12,336 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 [2022-11-20 19:43:12,336 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 [2022-11-20 19:43:12,337 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] [2022-11-20 19:43:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-11-20 19:43:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2022-11-20 19:43:12,799 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) [2022-11-20 19:43:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3576 transitions. [2022-11-20 19:43:12,815 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3576 transitions. Word has length 88 [2022-11-20 19:43:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3576 transitions. [2022-11-20 19:43:12,816 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) [2022-11-20 19:43:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3576 transitions. [2022-11-20 19:43:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 19:43:12,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:12,820 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] [2022-11-20 19:43:12,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:13,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 19:43:13,026 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1858608875, now seen corresponding path program 1 times [2022-11-20 19:43:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:13,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781678396] [2022-11-20 19:43:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:43:13,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:13,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781678396] [2022-11-20 19:43:13,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781678396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:13,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164342412] [2022-11-20 19:43:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:13,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:13,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:13,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:13,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:43:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:43:13,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 19:43:13,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:43:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 19:43:13,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164342412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:43:13,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2042592674] [2022-11-20 19:43:13,968 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-20 19:43:13,969 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:43:13,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:43:13,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:43:13,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:43:18,562 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 107 for LOIs [2022-11-20 19:43:18,611 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 115 for LOIs [2022-11-20 19:43:18,651 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 115 for LOIs [2022-11-20 19:43:18,689 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 42 for LOIs [2022-11-20 19:43:18,697 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2022-11-20 19:43:18,888 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:43:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2042592674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:25,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:43:25,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [12, 4, 5] total 45 [2022-11-20 19:43:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680122806] [2022-11-20 19:43:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 19:43:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 19:43:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 19:43:25,767 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) [2022-11-20 19:43:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:29,394 INFO L93 Difference]: Finished difference Result 5594 states and 7116 transitions. [2022-11-20 19:43:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 19:43:29,395 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 [2022-11-20 19:43:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:29,412 INFO L225 Difference]: With dead ends: 5594 [2022-11-20 19:43:29,412 INFO L226 Difference]: Without dead ends: 2785 [2022-11-20 19:43:29,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=408, Invalid=2898, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 19:43:29,421 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, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:43:29,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 515 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 19:43:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-11-20 19:43:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2705. [2022-11-20 19:43:29,769 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) [2022-11-20 19:43:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3434 transitions. [2022-11-20 19:43:29,781 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3434 transitions. Word has length 89 [2022-11-20 19:43:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:29,782 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3434 transitions. [2022-11-20 19:43:29,782 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) [2022-11-20 19:43:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3434 transitions. [2022-11-20 19:43:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 19:43:29,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:29,785 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] [2022-11-20 19:43:29,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:29,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 19:43:29,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1277764109, now seen corresponding path program 1 times [2022-11-20 19:43:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:29,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308450529] [2022-11-20 19:43:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 19:43:30,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:30,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308450529] [2022-11-20 19:43:30,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308450529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278659976] [2022-11-20 19:43:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:30,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:30,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:30,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:30,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 19:43:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:30,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 19:43:30,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 19:43:30,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:30,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278659976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:30,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:30,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-20 19:43:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160312616] [2022-11-20 19:43:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:30,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:43:30,324 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) [2022-11-20 19:43:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:30,702 INFO L93 Difference]: Finished difference Result 4711 states and 6014 transitions. [2022-11-20 19:43:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:30,703 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 [2022-11-20 19:43:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:30,716 INFO L225 Difference]: With dead ends: 4711 [2022-11-20 19:43:30,716 INFO L226 Difference]: Without dead ends: 2710 [2022-11-20 19:43:30,721 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 [2022-11-20 19:43:30,723 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 [2022-11-20 19:43:30,723 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] [2022-11-20 19:43:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-11-20 19:43:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2705. [2022-11-20 19:43:31,076 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) [2022-11-20 19:43:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3420 transitions. [2022-11-20 19:43:31,087 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3420 transitions. Word has length 89 [2022-11-20 19:43:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:31,087 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3420 transitions. [2022-11-20 19:43:31,088 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) [2022-11-20 19:43:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3420 transitions. [2022-11-20 19:43:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 19:43:31,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:31,091 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] [2022-11-20 19:43:31,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:31,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1388552914, now seen corresponding path program 1 times [2022-11-20 19:43:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:31,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252385094] [2022-11-20 19:43:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 19:43:31,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:31,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252385094] [2022-11-20 19:43:31,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252385094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:31,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090110295] [2022-11-20 19:43:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:31,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:31,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:31,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:31,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 19:43:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:31,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:43:31,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:43:31,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:31,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090110295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:31,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:31,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 19:43:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822408862] [2022-11-20 19:43:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:31,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:43:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:43:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:43:31,577 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) [2022-11-20 19:43:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:32,012 INFO L93 Difference]: Finished difference Result 5838 states and 7493 transitions. [2022-11-20 19:43:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:43:32,013 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 [2022-11-20 19:43:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:32,031 INFO L225 Difference]: With dead ends: 5838 [2022-11-20 19:43:32,031 INFO L226 Difference]: Without dead ends: 3837 [2022-11-20 19:43:32,036 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 [2022-11-20 19:43:32,037 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 [2022-11-20 19:43:32,037 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] [2022-11-20 19:43:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-11-20 19:43:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3773. [2022-11-20 19:43:32,489 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) [2022-11-20 19:43:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4718 transitions. [2022-11-20 19:43:32,510 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4718 transitions. Word has length 89 [2022-11-20 19:43:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:32,510 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 4718 transitions. [2022-11-20 19:43:32,511 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) [2022-11-20 19:43:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4718 transitions. [2022-11-20 19:43:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 19:43:32,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:32,515 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] [2022-11-20 19:43:32,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:32,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 19:43:32,721 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1217251954, now seen corresponding path program 1 times [2022-11-20 19:43:32,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:32,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694906852] [2022-11-20 19:43:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:32,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 19:43:32,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694906852] [2022-11-20 19:43:32,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694906852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661325814] [2022-11-20 19:43:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:32,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:32,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:32,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 19:43:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:32,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:43:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 19:43:33,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:33,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661325814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:33,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:33,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-11-20 19:43:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35845655] [2022-11-20 19:43:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:33,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:43:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:43:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:43:33,059 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) [2022-11-20 19:43:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:33,994 INFO L93 Difference]: Finished difference Result 10150 states and 12591 transitions. [2022-11-20 19:43:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:43:33,994 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 [2022-11-20 19:43:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:34,048 INFO L225 Difference]: With dead ends: 10150 [2022-11-20 19:43:34,048 INFO L226 Difference]: Without dead ends: 6383 [2022-11-20 19:43:34,057 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 [2022-11-20 19:43:34,058 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 [2022-11-20 19:43:34,059 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] [2022-11-20 19:43:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-11-20 19:43:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6379. [2022-11-20 19:43:34,879 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) [2022-11-20 19:43:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 7803 transitions. [2022-11-20 19:43:34,906 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 7803 transitions. Word has length 90 [2022-11-20 19:43:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:34,906 INFO L495 AbstractCegarLoop]: Abstraction has 6379 states and 7803 transitions. [2022-11-20 19:43:34,907 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) [2022-11-20 19:43:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 7803 transitions. [2022-11-20 19:43:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 19:43:34,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:34,910 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] [2022-11-20 19:43:34,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 19:43:35,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash 772094738, now seen corresponding path program 1 times [2022-11-20 19:43:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:35,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363541478] [2022-11-20 19:43:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 19:43:35,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:35,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363541478] [2022-11-20 19:43:35,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363541478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956676844] [2022-11-20 19:43:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:35,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:35,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:35,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 19:43:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 19:43:35,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:43:35,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956676844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:35,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:43:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-20 19:43:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861691680] [2022-11-20 19:43:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:43:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:43:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:43:35,552 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) [2022-11-20 19:43:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:36,403 INFO L93 Difference]: Finished difference Result 12253 states and 15351 transitions. [2022-11-20 19:43:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:43:36,404 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 [2022-11-20 19:43:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:36,424 INFO L225 Difference]: With dead ends: 12253 [2022-11-20 19:43:36,424 INFO L226 Difference]: Without dead ends: 5880 [2022-11-20 19:43:36,437 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 [2022-11-20 19:43:36,438 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 [2022-11-20 19:43:36,438 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] [2022-11-20 19:43:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-20 19:43:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 4590. [2022-11-20 19:43:37,047 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) [2022-11-20 19:43:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5636 transitions. [2022-11-20 19:43:37,062 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5636 transitions. Word has length 92 [2022-11-20 19:43:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:37,062 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 5636 transitions. [2022-11-20 19:43:37,063 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) [2022-11-20 19:43:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5636 transitions. [2022-11-20 19:43:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 19:43:37,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:37,067 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] [2022-11-20 19:43:37,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 19:43:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:37,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash -872335531, now seen corresponding path program 1 times [2022-11-20 19:43:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122500249] [2022-11-20 19:43:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 19:43:37,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:37,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122500249] [2022-11-20 19:43:37,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122500249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:37,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:37,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125920745] [2022-11-20 19:43:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:37,338 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) [2022-11-20 19:43:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:37,983 INFO L93 Difference]: Finished difference Result 7625 states and 9413 transitions. [2022-11-20 19:43:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:43:37,983 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 [2022-11-20 19:43:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:37,996 INFO L225 Difference]: With dead ends: 7625 [2022-11-20 19:43:37,996 INFO L226 Difference]: Without dead ends: 3922 [2022-11-20 19:43:38,004 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 [2022-11-20 19:43:38,005 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 [2022-11-20 19:43:38,005 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] [2022-11-20 19:43:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-20 19:43:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3836. [2022-11-20 19:43:38,579 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) [2022-11-20 19:43:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4626 transitions. [2022-11-20 19:43:38,588 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4626 transitions. Word has length 98 [2022-11-20 19:43:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:38,589 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 4626 transitions. [2022-11-20 19:43:38,589 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) [2022-11-20 19:43:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4626 transitions. [2022-11-20 19:43:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 19:43:38,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:38,592 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] [2022-11-20 19:43:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 19:43:38,592 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2003794542, now seen corresponding path program 1 times [2022-11-20 19:43:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:38,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338317834] [2022-11-20 19:43:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:38,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 19:43:38,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:38,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338317834] [2022-11-20 19:43:38,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338317834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:38,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:38,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:43:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922686608] [2022-11-20 19:43:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:38,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:43:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:43:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:43:38,684 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) [2022-11-20 19:43:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:39,756 INFO L93 Difference]: Finished difference Result 8288 states and 10404 transitions. [2022-11-20 19:43:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:43:39,759 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 [2022-11-20 19:43:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:39,784 INFO L225 Difference]: With dead ends: 8288 [2022-11-20 19:43:39,785 INFO L226 Difference]: Without dead ends: 6001 [2022-11-20 19:43:39,791 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 [2022-11-20 19:43:39,792 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:43:39,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 488 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:43:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-11-20 19:43:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4162. [2022-11-20 19:43:40,332 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) [2022-11-20 19:43:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5006 transitions. [2022-11-20 19:43:40,343 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5006 transitions. Word has length 99 [2022-11-20 19:43:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:40,343 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5006 transitions. [2022-11-20 19:43:40,344 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) [2022-11-20 19:43:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5006 transitions. [2022-11-20 19:43:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 19:43:40,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:40,347 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] [2022-11-20 19:43:40,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 19:43:40,347 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:40,348 INFO L85 PathProgramCache]: Analyzing trace with hash 650173982, now seen corresponding path program 1 times [2022-11-20 19:43:40,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:40,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317515251] [2022-11-20 19:43:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 19:43:40,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:43:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317515251] [2022-11-20 19:43:40,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317515251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:43:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794502122] [2022-11-20 19:43:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:43:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:40,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:43:40,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 19:43:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:40,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:43:40,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 19:43:40,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:43:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-20 19:43:41,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794502122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:43:41,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1979177899] [2022-11-20 19:43:41,110 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-20 19:43:41,110 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:43:41,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:43:41,111 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:43:41,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:43:44,243 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 109 for LOIs [2022-11-20 19:43:44,267 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 117 for LOIs [2022-11-20 19:43:44,293 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 117 for LOIs [2022-11-20 19:43:44,329 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2022-11-20 19:43:44,336 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 44 for LOIs [2022-11-20 19:43:44,513 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:43:51,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1979177899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:51,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:43:51,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [12, 4, 5] total 46 [2022-11-20 19:43:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797064510] [2022-11-20 19:43:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:51,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 19:43:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:43:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 19:43:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 19:43:51,530 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) [2022-11-20 19:44:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:10,896 INFO L93 Difference]: Finished difference Result 6427 states and 7780 transitions. [2022-11-20 19:44:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-20 19:44:10,902 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 [2022-11-20 19:44:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:10,913 INFO L225 Difference]: With dead ends: 6427 [2022-11-20 19:44:10,913 INFO L226 Difference]: Without dead ends: 4274 [2022-11-20 19:44:10,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=1287, Invalid=12285, Unknown=0, NotChecked=0, Total=13572 [2022-11-20 19:44:10,923 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 297 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:10,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 945 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 19:44:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-11-20 19:44:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4100. [2022-11-20 19:44:11,578 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) [2022-11-20 19:44:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 4920 transitions. [2022-11-20 19:44:11,588 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 4920 transitions. Word has length 100 [2022-11-20 19:44:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:11,588 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 4920 transitions. [2022-11-20 19:44:11,589 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) [2022-11-20 19:44:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 4920 transitions. [2022-11-20 19:44:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 19:44:11,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:11,592 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] [2022-11-20 19:44:11,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:44:11,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:11,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash -362763198, now seen corresponding path program 1 times [2022-11-20 19:44:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774137245] [2022-11-20 19:44:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:44:12,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774137245] [2022-11-20 19:44:12,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774137245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694574845] [2022-11-20 19:44:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:12,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:12,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:12,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:12,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 19:44:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:12,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:44:12,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 19:44:12,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 19:44:12,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694574845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [587407494] [2022-11-20 19:44:12,538 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-20 19:44:12,539 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:12,539 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:12,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:12,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:15,690 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-20 19:44:15,710 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-20 19:44:15,729 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-20 19:44:15,750 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-20 19:44:15,755 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-20 19:44:15,877 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:44:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [587407494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:21,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:44:21,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [12, 4, 5] total 47 [2022-11-20 19:44:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297201752] [2022-11-20 19:44:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:21,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 19:44:21,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:21,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 19:44:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 19:44:21,835 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) [2022-11-20 19:44:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:25,050 INFO L93 Difference]: Finished difference Result 6763 states and 8117 transitions. [2022-11-20 19:44:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 19:44:25,051 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 [2022-11-20 19:44:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:25,064 INFO L225 Difference]: With dead ends: 6763 [2022-11-20 19:44:25,065 INFO L226 Difference]: Without dead ends: 4150 [2022-11-20 19:44:25,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 19:44:25,074 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 [2022-11-20 19:44:25,075 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] [2022-11-20 19:44:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2022-11-20 19:44:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4109. [2022-11-20 19:44:25,591 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) [2022-11-20 19:44:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 4930 transitions. [2022-11-20 19:44:25,601 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 4930 transitions. Word has length 100 [2022-11-20 19:44:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 4109 states and 4930 transitions. [2022-11-20 19:44:25,602 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) [2022-11-20 19:44:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 4930 transitions. [2022-11-20 19:44:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 19:44:25,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:25,605 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] [2022-11-20 19:44:25,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:44:25,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:25,811 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash 128718012, now seen corresponding path program 1 times [2022-11-20 19:44:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:25,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484619639] [2022-11-20 19:44:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 19:44:25,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:25,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484619639] [2022-11-20 19:44:25,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484619639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:25,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:44:25,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:44:25,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981071363] [2022-11-20 19:44:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:25,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:44:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:44:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:44:25,933 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) [2022-11-20 19:44:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:26,596 INFO L93 Difference]: Finished difference Result 6555 states and 7921 transitions. [2022-11-20 19:44:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:44:26,596 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 [2022-11-20 19:44:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:26,606 INFO L225 Difference]: With dead ends: 6555 [2022-11-20 19:44:26,607 INFO L226 Difference]: Without dead ends: 2946 [2022-11-20 19:44:26,619 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 [2022-11-20 19:44:26,620 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 [2022-11-20 19:44:26,621 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] [2022-11-20 19:44:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-11-20 19:44:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2503. [2022-11-20 19:44:27,135 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) [2022-11-20 19:44:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3002 transitions. [2022-11-20 19:44:27,141 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3002 transitions. Word has length 102 [2022-11-20 19:44:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:27,141 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3002 transitions. [2022-11-20 19:44:27,142 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) [2022-11-20 19:44:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3002 transitions. [2022-11-20 19:44:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 19:44:27,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:27,144 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] [2022-11-20 19:44:27,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 19:44:27,145 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1717133426, now seen corresponding path program 1 times [2022-11-20 19:44:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:27,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634867555] [2022-11-20 19:44:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 19:44:27,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634867555] [2022-11-20 19:44:27,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634867555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911810719] [2022-11-20 19:44:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:27,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:27,473 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 19:44:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 19:44:27,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 19:44:27,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 19:44:27,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911810719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:27,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025094293] [2022-11-20 19:44:27,826 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-20 19:44:27,826 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:27,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:27,827 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:27,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:31,465 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-20 19:44:31,481 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-20 19:44:31,515 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-20 19:44:31,549 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-20 19:44:31,554 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-20 19:44:31,692 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:44:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2025094293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:41,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:44:41,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [12, 5, 6] total 50 [2022-11-20 19:44:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108036054] [2022-11-20 19:44:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:41,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:44:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:44:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 19:44:41,651 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) [2022-11-20 19:44:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:46,858 INFO L93 Difference]: Finished difference Result 3748 states and 4521 transitions. [2022-11-20 19:44:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 19:44:46,860 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 [2022-11-20 19:44:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:46,866 INFO L225 Difference]: With dead ends: 3748 [2022-11-20 19:44:46,867 INFO L226 Difference]: Without dead ends: 2480 [2022-11-20 19:44:46,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 254 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=451, Invalid=3709, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 19:44:46,876 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 [2022-11-20 19:44:46,877 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] [2022-11-20 19:44:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-20 19:44:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2433. [2022-11-20 19:44:47,374 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) [2022-11-20 19:44:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2915 transitions. [2022-11-20 19:44:47,380 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2915 transitions. Word has length 101 [2022-11-20 19:44:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:47,380 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 2915 transitions. [2022-11-20 19:44:47,381 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) [2022-11-20 19:44:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2915 transitions. [2022-11-20 19:44:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 19:44:47,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:47,384 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] [2022-11-20 19:44:47,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 19:44:47,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:47,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1461258897, now seen corresponding path program 1 times [2022-11-20 19:44:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517544660] [2022-11-20 19:44:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 19:44:47,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:47,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517544660] [2022-11-20 19:44:47,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517544660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:47,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802331342] [2022-11-20 19:44:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:47,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:47,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:47,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 19:44:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:47,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:44:47,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:44:48,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 19:44:48,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802331342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:48,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790043688] [2022-11-20 19:44:48,399 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-20 19:44:48,400 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:48,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:48,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:48,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:51,492 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-20 19:44:51,494 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-20 19:44:51,514 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-20 19:44:51,534 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-20 19:44:51,555 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-20 19:44:51,560 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-20 19:44:51,704 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:45:00,273 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 [2022-11-20 19:45:00,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:45:00,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:45:00,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 5 [2022-11-20 19:45:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441919883] [2022-11-20 19:45:00,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:45:00,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:45:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:45:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:45:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 19:45:00,276 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) [2022-11-20 19:45:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:45:00,905 INFO L93 Difference]: Finished difference Result 4669 states and 5817 transitions. [2022-11-20 19:45:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:45:00,906 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 [2022-11-20 19:45:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:45:00,915 INFO L225 Difference]: With dead ends: 4669 [2022-11-20 19:45:00,915 INFO L226 Difference]: Without dead ends: 3200 [2022-11-20 19:45:00,920 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 [2022-11-20 19:45:00,921 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 119 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-20 19:45:00,921 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] [2022-11-20 19:45:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-11-20 19:45:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 2357. [2022-11-20 19:45:01,413 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) [2022-11-20 19:45:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2818 transitions. [2022-11-20 19:45:01,419 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2818 transitions. Word has length 103 [2022-11-20 19:45:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:45:01,419 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 2818 transitions. [2022-11-20 19:45:01,419 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) [2022-11-20 19:45:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2818 transitions. [2022-11-20 19:45:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 19:45:01,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:45:01,423 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] [2022-11-20 19:45:01,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:01,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:45:01,628 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:45:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:45:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1612043928, now seen corresponding path program 1 times [2022-11-20 19:45:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:45:01,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593165931] [2022-11-20 19:45:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:01,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:45:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 19:45:01,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:45:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593165931] [2022-11-20 19:45:01,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593165931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:45:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752763566] [2022-11-20 19:45:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:01,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:45:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:45:01,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:45:01,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 19:45:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:02,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 19:45:02,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:45:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:45:02,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:45:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 19:45:02,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752763566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:45:02,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1599996678] [2022-11-20 19:45:02,387 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-20 19:45:02,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:45:02,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:45:02,393 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:45:02,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:45:05,592 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 73 for LOIs [2022-11-20 19:45:05,604 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-20 19:45:05,633 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-20 19:45:05,662 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-20 19:45:05,680 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-20 19:45:05,685 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-20 19:45:05,790 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:45:15,789 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 [2022-11-20 19:45:15,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:45:15,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:45:15,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 6] total 16 [2022-11-20 19:45:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542899240] [2022-11-20 19:45:15,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:45:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 19:45:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:45:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 19:45:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 19:45:15,792 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) [2022-11-20 19:45:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:45:20,616 INFO L93 Difference]: Finished difference Result 5787 states and 7176 transitions. [2022-11-20 19:45:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-20 19:45:20,617 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 [2022-11-20 19:45:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:45:20,626 INFO L225 Difference]: With dead ends: 5787 [2022-11-20 19:45:20,626 INFO L226 Difference]: Without dead ends: 3438 [2022-11-20 19:45:20,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 286 SyntacticMatches, 19 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11055 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1861, Invalid=24221, Unknown=0, NotChecked=0, Total=26082 [2022-11-20 19:45:20,636 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1215 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:45:20,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2733 Invalid, 3624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 19:45:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-11-20 19:45:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2299. [2022-11-20 19:45:21,099 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) [2022-11-20 19:45:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2779 transitions. [2022-11-20 19:45:21,106 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2779 transitions. Word has length 110 [2022-11-20 19:45:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:45:21,106 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2779 transitions. [2022-11-20 19:45:21,107 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) [2022-11-20 19:45:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2779 transitions. [2022-11-20 19:45:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 19:45:21,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:45:21,111 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] [2022-11-20 19:45:21,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 19:45:21,319 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:45:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:45:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash 562120164, now seen corresponding path program 1 times [2022-11-20 19:45:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:45:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102482968] [2022-11-20 19:45:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:45:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 19:45:21,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:45:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102482968] [2022-11-20 19:45:21,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102482968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:45:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335388981] [2022-11-20 19:45:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:21,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:45:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:45:21,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:45:21,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 19:45:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 19:45:21,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:45:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 19:45:21,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:45:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 91 proven. 11 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-20 19:45:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335388981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:45:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [648456212] [2022-11-20 19:45:22,230 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-20 19:45:22,230 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:45:22,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:45:22,231 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:45:22,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:45:25,999 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-20 19:45:26,001 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-20 19:45:26,020 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-20 19:45:26,039 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-20 19:45:26,060 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-20 19:45:26,064 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-20 19:45:26,203 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:45:34,638 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 [2022-11-20 19:45:34,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:45:34,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:45:34,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 11 [2022-11-20 19:45:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470436414] [2022-11-20 19:45:34,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:45:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:45:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:45:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:45:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2349, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 19:45:34,640 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) [2022-11-20 19:45:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:45:35,961 INFO L93 Difference]: Finished difference Result 7211 states and 8955 transitions. [2022-11-20 19:45:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 19:45:35,961 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 [2022-11-20 19:45:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:45:35,975 INFO L225 Difference]: With dead ends: 7211 [2022-11-20 19:45:35,975 INFO L226 Difference]: Without dead ends: 4865 [2022-11-20 19:45:35,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 439 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=447, Invalid=4109, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 19:45:35,982 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 [2022-11-20 19:45:35,982 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] [2022-11-20 19:45:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2022-11-20 19:45:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 2721. [2022-11-20 19:45:36,587 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) [2022-11-20 19:45:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3406 transitions. [2022-11-20 19:45:36,596 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3406 transitions. Word has length 158 [2022-11-20 19:45:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:45:36,596 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3406 transitions. [2022-11-20 19:45:36,597 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) [2022-11-20 19:45:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3406 transitions. [2022-11-20 19:45:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 19:45:36,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:45:36,601 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] [2022-11-20 19:45:36,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 19:45:36,811 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:45:36,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:45:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash 733252937, now seen corresponding path program 1 times [2022-11-20 19:45:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:45:36,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99518799] [2022-11-20 19:45:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:45:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 84 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 19:45:36,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:45:36,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99518799] [2022-11-20 19:45:36,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99518799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:45:36,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795841393] [2022-11-20 19:45:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:36,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:45:36,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:45:36,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:45:36,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 19:45:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:45:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:45:37,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:45:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 19:45:37,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:45:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 19:45:37,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795841393] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 19:45:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:45:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 7 [2022-11-20 19:45:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767710408] [2022-11-20 19:45:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:45:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:45:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:45:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:45:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:45:37,390 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) [2022-11-20 19:45:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:45:37,960 INFO L93 Difference]: Finished difference Result 5382 states and 6780 transitions. [2022-11-20 19:45:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:45:37,961 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 [2022-11-20 19:45:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:45:37,968 INFO L225 Difference]: With dead ends: 5382 [2022-11-20 19:45:37,969 INFO L226 Difference]: Without dead ends: 2826 [2022-11-20 19:45:37,974 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 [2022-11-20 19:45:37,975 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-20 19:45:37,975 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] [2022-11-20 19:45:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-11-20 19:45:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2692. [2022-11-20 19:45:38,392 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) [2022-11-20 19:45:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3135 transitions. [2022-11-20 19:45:38,398 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3135 transitions. Word has length 169 [2022-11-20 19:45:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:45:38,399 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 3135 transitions. [2022-11-20 19:45:38,399 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) [2022-11-20 19:45:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3135 transitions. [2022-11-20 19:45:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 19:45:38,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:45:38,403 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] [2022-11-20 19:45:38,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:45:38,610 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:45:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:45:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash 379124548, now seen corresponding path program 1 times [2022-11-20 19:45:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:45:38,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104061480] [2022-11-20 19:45:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:45:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:45:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:45:38,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:45:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:45:38,825 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:45:38,826 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:45:38,827 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:45:38,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 19:45:38,833 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] [2022-11-20 19:45:38,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:45:39,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:45:39 BoogieIcfgContainer [2022-11-20 19:45:39,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:45:39,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:45:39,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:45:39,038 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:45:39,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:03" (3/4) ... [2022-11-20 19:45:39,040 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 19:45:39,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:45:39,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:45:39,226 INFO L158 Benchmark]: Toolchain (without parser) took 157102.99ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 121.0MB in the beginning and 705.4MB in the end (delta: -584.3MB). Peak memory consumption was 646.2MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,227 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 122.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:45:39,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.70ms. Allocated memory is still 153.1MB. Free memory was 121.0MB in the beginning and 107.4MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.59ms. Allocated memory is still 153.1MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,231 INFO L158 Benchmark]: Boogie Preprocessor took 64.73ms. Allocated memory is still 153.1MB. Free memory was 105.3MB in the beginning and 103.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,232 INFO L158 Benchmark]: RCFGBuilder took 703.86ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 76.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,232 INFO L158 Benchmark]: TraceAbstraction took 155728.32ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 75.5MB in the beginning and 722.2MB in the end (delta: -646.7MB). Peak memory consumption was 585.4MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,233 INFO L158 Benchmark]: Witness Printer took 187.90ms. Allocated memory is still 1.4GB. Free memory was 722.2MB in the beginning and 705.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 19:45:39,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 122.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.70ms. Allocated memory is still 153.1MB. Free memory was 121.0MB in the beginning and 107.4MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.59ms. Allocated memory is still 153.1MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.73ms. Allocated memory is still 153.1MB. Free memory was 105.3MB in the beginning and 103.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.86ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 76.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 155728.32ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 75.5MB in the beginning and 722.2MB in the end (delta: -646.7MB). Peak memory consumption was 585.4MB. Max. memory is 16.1GB. * Witness Printer took 187.90ms. Allocated memory is still 1.4GB. Free memory was 722.2MB in the beginning and 705.4MB 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: [L25] int max_loop ; [L26] int num ; [L27] int i ; [L28] int e ; [L29] int timer ; [L30] char data_0 ; [L31] char data_1 ; [L74] int P_1_pc; [L75] int P_1_st ; [L76] int P_1_i ; [L77] int P_1_ev ; [L132] int C_1_pc ; [L133] int C_1_st ; [L134] int C_1_i ; [L135] int C_1_ev ; [L136] int C_1_pr ; [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: 155.5s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 47.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4764 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4672 mSDsluCounter, 11442 SdHoareTripleChecker+Invalid, 10.7s 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, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3737 GetRequests, 3002 SyntacticMatches, 66 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21357 ImplicationChecksByTransitivity, 82.0s 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.4s 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: 15.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 24, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 362, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 410, TOOLS_POST_TIME: 5.7s, TOOLS_POST_CALL_APPLICATIONS: 265, TOOLS_POST_CALL_TIME: 3.8s, TOOLS_POST_RETURN_APPLICATIONS: 220, TOOLS_POST_RETURN_TIME: 1.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 895, TOOLS_QUANTIFIERELIM_TIME: 10.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 981, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 280, DOMAIN_JOIN_TIME: 3.4s, 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: 0.5s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 8.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 8.5s, 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! [2022-11-20 19:45:39,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302cf8ac-e73a-4828-acd1-a1f0586521bc/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE