./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh --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 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 --- 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-2329fc7 [2022-12-14 04:42:42,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:42:42,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:42:42,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:42:42,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:42:42,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:42:42,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:42:42,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:42:42,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:42:42,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:42:42,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:42:42,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:42:42,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:42:42,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:42:42,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:42:42,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:42:42,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:42:42,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:42:42,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:42:42,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:42:42,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:42:42,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:42:42,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:42:42,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:42:42,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:42:42,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:42:42,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:42:42,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:42:42,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:42:42,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:42:42,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:42:42,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:42:42,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:42:42,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:42:42,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:42:42,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:42:42,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:42:42,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:42:42,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:42:42,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:42:42,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:42:42,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:42:42,417 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:42:42,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:42:42,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:42:42,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:42:42,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:42:42,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:42:42,422 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:42:42,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:42:42,422 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:42:42,423 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:42:42,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:42:42,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:42:42,424 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:42:42,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:42,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:42:42,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:42:42,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:42:42,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:42:42,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:42:42,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:42:42,426 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_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 [2022-12-14 04:42:42,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:42:42,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:42:42,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:42:42,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:42:42,632 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:42:42,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-12-14 04:42:45,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:42:45,693 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:42:45,694 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-12-14 04:42:45,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/data/ad54c2099/6640e0add5c04e308df609d97f7352c7/FLAGd650d60ac [2022-12-14 04:42:45,736 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/data/ad54c2099/6640e0add5c04e308df609d97f7352c7 [2022-12-14 04:42:45,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:42:45,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:42:45,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:45,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:42:45,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:42:45,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:45" (1/1) ... [2022-12-14 04:42:45,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45429570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:45, skipping insertion in model container [2022-12-14 04:42:45,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:45" (1/1) ... [2022-12-14 04:42:45,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:42:45,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:42:47,340 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_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-12-14 04:42:47,360 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_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-12-14 04:42:47,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:47,622 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:42:48,432 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_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-12-14 04:42:48,435 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_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-12-14 04:42:48,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:48,485 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:42:48,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48 WrapperNode [2022-12-14 04:42:48,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:48,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:48,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:42:48,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:42:48,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:48,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:48,867 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-12-14 04:42:48,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:48,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:42:48,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:42:48,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:42:48,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:48,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:48,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:48,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:42:49,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:42:49,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:42:49,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:42:49,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (1/1) ... [2022-12-14 04:42:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:49,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:49,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:42:49,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:42:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:42:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 04:42:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 04:42:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 04:42:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 04:42:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 04:42:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 04:42:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 04:42:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 04:42:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 04:42:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 04:42:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 04:42:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 04:42:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 04:42:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 04:42:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:42:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:42:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:42:49,347 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:42:49,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:42:54,922 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:42:56,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:42:56,540 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-12-14 04:42:56,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:56 BoogieIcfgContainer [2022-12-14 04:42:56,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:42:56,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:42:56,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:42:56,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:42:56,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:42:45" (1/3) ... [2022-12-14 04:42:56,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657a7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:56, skipping insertion in model container [2022-12-14 04:42:56,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:48" (2/3) ... [2022-12-14 04:42:56,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657a7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:56, skipping insertion in model container [2022-12-14 04:42:56,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:56" (3/3) ... [2022-12-14 04:42:56,551 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.15.cil.c [2022-12-14 04:42:56,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:42:56,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 04:42:56,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:42:56,641 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;@b719043, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:42:56,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 04:42:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-14 04:42:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 04:42:56,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:56,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:56,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash 79082115, now seen corresponding path program 1 times [2022-12-14 04:42:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:56,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653769756] [2022-12-14 04:42:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:57,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:57,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653769756] [2022-12-14 04:42:57,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653769756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:57,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:42:57,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:42:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604309531] [2022-12-14 04:42:57,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:42:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:42:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:42:57,045 INFO L87 Difference]: Start difference. First operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 04:42:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:57,803 INFO L93 Difference]: Finished difference Result 3877 states and 7503 transitions. [2022-12-14 04:42:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:42:57,805 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), 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 71 [2022-12-14 04:42:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:57,824 INFO L225 Difference]: With dead ends: 3877 [2022-12-14 04:42:57,825 INFO L226 Difference]: Without dead ends: 2028 [2022-12-14 04:42:57,832 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 [2022-12-14 04:42:57,835 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 3820 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:57,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6994 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:42:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-12-14 04:42:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2027. [2022-12-14 04:42:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1961 states have (on average 1.9163691993880674) internal successors, (3758), 1965 states have internal predecessors, (3758), 52 states have call successors, (52), 13 states have call predecessors, (52), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 04:42:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3860 transitions. [2022-12-14 04:42:57,927 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3860 transitions. Word has length 71 [2022-12-14 04:42:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:57,928 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3860 transitions. [2022-12-14 04:42:57,928 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), 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) [2022-12-14 04:42:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3860 transitions. [2022-12-14 04:42:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:42:57,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:57,933 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:42:57,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1076625501, now seen corresponding path program 1 times [2022-12-14 04:42:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322383175] [2022-12-14 04:42:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:42:58,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:58,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322383175] [2022-12-14 04:42:58,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322383175] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:58,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644156992] [2022-12-14 04:42:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:58,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:58,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:58,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:42:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:58,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:42:58,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:42:58,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:42:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644156992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:42:58,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:42:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57204133] [2022-12-14 04:42:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:42:58,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:42:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:42:58,434 INFO L87 Difference]: Start difference. First operand 2027 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:42:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:58,833 INFO L93 Difference]: Finished difference Result 2782 states and 5049 transitions. [2022-12-14 04:42:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:42:58,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:42:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:58,846 INFO L225 Difference]: With dead ends: 2782 [2022-12-14 04:42:58,846 INFO L226 Difference]: Without dead ends: 2401 [2022-12-14 04:42:58,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:42:58,850 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 3533 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:58,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3624 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:42:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-12-14 04:42:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2395. [2022-12-14 04:42:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2273 states have (on average 1.86229652441707) internal successors, (4233), 2278 states have internal predecessors, (4233), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 04:42:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4423 transitions. [2022-12-14 04:42:58,932 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4423 transitions. Word has length 144 [2022-12-14 04:42:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:58,932 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 4423 transitions. [2022-12-14 04:42:58,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:42:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4423 transitions. [2022-12-14 04:42:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:42:58,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:58,938 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:58,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:59,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:59,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2063307807, now seen corresponding path program 1 times [2022-12-14 04:42:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:59,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005659640] [2022-12-14 04:42:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:42:59,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005659640] [2022-12-14 04:42:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005659640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273313993] [2022-12-14 04:42:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:59,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:59,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:59,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:42:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:59,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:42:59,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 04:42:59,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:42:59,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273313993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:59,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:42:59,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:42:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210005419] [2022-12-14 04:42:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:42:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:42:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:42:59,644 INFO L87 Difference]: Start difference. First operand 2395 states and 4423 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:00,111 INFO L93 Difference]: Finished difference Result 3880 states and 6758 transitions. [2022-12-14 04:43:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:00,126 INFO L225 Difference]: With dead ends: 3880 [2022-12-14 04:43:00,127 INFO L226 Difference]: Without dead ends: 3131 [2022-12-14 04:43:00,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:00,131 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3524 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:00,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:43:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-12-14 04:43:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3123. [2022-12-14 04:43:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2891 states have (on average 1.7886544448287789) internal successors, (5171), 2898 states have internal predecessors, (5171), 182 states have call successors, (182), 49 states have call predecessors, (182), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2022-12-14 04:43:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5533 transitions. [2022-12-14 04:43:00,212 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5533 transitions. Word has length 144 [2022-12-14 04:43:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:00,212 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5533 transitions. [2022-12-14 04:43:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5533 transitions. [2022-12-14 04:43:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:00,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:00,215 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:00,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:43:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 04:43:00,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1495507427, now seen corresponding path program 1 times [2022-12-14 04:43:00,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255902170] [2022-12-14 04:43:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:43:00,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:00,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255902170] [2022-12-14 04:43:00,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255902170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:00,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738630863] [2022-12-14 04:43:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:00,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:00,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:00,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:43:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:00,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:00,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 04:43:00,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:00,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738630863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:00,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:00,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:43:00,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821705665] [2022-12-14 04:43:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:00,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:00,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:00,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:00,880 INFO L87 Difference]: Start difference. First operand 3123 states and 5533 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:01,316 INFO L93 Difference]: Finished difference Result 6052 states and 10126 transitions. [2022-12-14 04:43:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:01,336 INFO L225 Difference]: With dead ends: 6052 [2022-12-14 04:43:01,337 INFO L226 Difference]: Without dead ends: 4575 [2022-12-14 04:43:01,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:01,345 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 3545 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:01,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3611 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:43:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-12-14 04:43:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4563. [2022-12-14 04:43:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4115 states have (on average 1.7066828675577157) internal successors, (7023), 4126 states have internal predecessors, (7023), 350 states have call successors, (350), 97 states have call predecessors, (350), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2022-12-14 04:43:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7721 transitions. [2022-12-14 04:43:01,494 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7721 transitions. Word has length 144 [2022-12-14 04:43:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:01,495 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7721 transitions. [2022-12-14 04:43:01,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7721 transitions. [2022-12-14 04:43:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:01,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:01,504 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:01,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:43:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:01,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash -523394783, now seen corresponding path program 1 times [2022-12-14 04:43:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:01,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869310251] [2022-12-14 04:43:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:43:01,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:01,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869310251] [2022-12-14 04:43:01,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869310251] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714702353] [2022-12-14 04:43:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:01,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:01,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:01,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:43:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:01,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:01,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 04:43:02,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:02,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714702353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:02,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:02,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:43:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332662494] [2022-12-14 04:43:02,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:02,011 INFO L87 Difference]: Start difference. First operand 4563 states and 7721 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:02,600 INFO L93 Difference]: Finished difference Result 10348 states and 16762 transitions. [2022-12-14 04:43:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:02,624 INFO L225 Difference]: With dead ends: 10348 [2022-12-14 04:43:02,624 INFO L226 Difference]: Without dead ends: 7431 [2022-12-14 04:43:02,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:02,635 INFO L413 NwaCegarLoop]: 3373 mSDtfsCounter, 3551 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:02,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3621 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:43:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-12-14 04:43:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7411. [2022-12-14 04:43:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 6539 states have (on average 1.6331243309374521) internal successors, (10679), 6558 states have internal predecessors, (10679), 678 states have call successors, (678), 193 states have call predecessors, (678), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2022-12-14 04:43:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12033 transitions. [2022-12-14 04:43:02,909 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 12033 transitions. Word has length 144 [2022-12-14 04:43:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 12033 transitions. [2022-12-14 04:43:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 12033 transitions. [2022-12-14 04:43:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:02,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:02,923 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:02,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:43:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:03,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1786690015, now seen corresponding path program 1 times [2022-12-14 04:43:03,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:03,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870941748] [2022-12-14 04:43:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:43:03,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870941748] [2022-12-14 04:43:03,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870941748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:03,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166425963] [2022-12-14 04:43:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:03,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:03,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:03,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:43:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:03,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:03,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 04:43:03,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166425963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:03,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:03,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:43:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776190751] [2022-12-14 04:43:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:03,561 INFO L87 Difference]: Start difference. First operand 7411 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:04,092 INFO L93 Difference]: Finished difference Result 18844 states and 29834 transitions. [2022-12-14 04:43:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:04,127 INFO L225 Difference]: With dead ends: 18844 [2022-12-14 04:43:04,127 INFO L226 Difference]: Without dead ends: 13079 [2022-12-14 04:43:04,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:04,142 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3539 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:04,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:43:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13079 states. [2022-12-14 04:43:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13079 to 13043. [2022-12-14 04:43:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 11339 states have (on average 1.578181497486551) internal successors, (17895), 11374 states have internal predecessors, (17895), 1318 states have call successors, (1318), 385 states have call predecessors, (1318), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2022-12-14 04:43:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 20529 transitions. [2022-12-14 04:43:04,493 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 20529 transitions. Word has length 144 [2022-12-14 04:43:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:04,494 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 20529 transitions. [2022-12-14 04:43:04,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 20529 transitions. [2022-12-14 04:43:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:04,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:04,509 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:04,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:43:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:04,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2087747485, now seen corresponding path program 1 times [2022-12-14 04:43:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:04,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614840640] [2022-12-14 04:43:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:43:04,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614840640] [2022-12-14 04:43:04,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614840640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:04,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148043369] [2022-12-14 04:43:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:04,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:04,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:04,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:43:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:05,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:05,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 04:43:05,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:05,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148043369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:05,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:05,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:43:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840305148] [2022-12-14 04:43:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:05,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:05,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:05,125 INFO L87 Difference]: Start difference. First operand 13043 states and 20529 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:05,895 INFO L93 Difference]: Finished difference Result 35644 states and 55578 transitions. [2022-12-14 04:43:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:05,948 INFO L225 Difference]: With dead ends: 35644 [2022-12-14 04:43:05,948 INFO L226 Difference]: Without dead ends: 24247 [2022-12-14 04:43:05,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:05,971 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3554 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:05,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:43:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2022-12-14 04:43:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 24179. [2022-12-14 04:43:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 20843 states have (on average 1.5417646212157559) internal successors, (32135), 20910 states have internal predecessors, (32135), 2566 states have call successors, (2566), 769 states have call predecessors, (2566), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2022-12-14 04:43:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 37265 transitions. [2022-12-14 04:43:06,527 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 37265 transitions. Word has length 144 [2022-12-14 04:43:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:06,527 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 37265 transitions. [2022-12-14 04:43:06,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 37265 transitions. [2022-12-14 04:43:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:06,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:06,549 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:06,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:43:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 04:43:06,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -731986401, now seen corresponding path program 1 times [2022-12-14 04:43:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:06,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336188303] [2022-12-14 04:43:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:43:06,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:06,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336188303] [2022-12-14 04:43:06,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336188303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608038994] [2022-12-14 04:43:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:06,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:43:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:07,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:07,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:43:07,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:07,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608038994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:07,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:07,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 04:43:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856677375] [2022-12-14 04:43:07,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:07,073 INFO L87 Difference]: Start difference. First operand 24179 states and 37265 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:08,446 INFO L93 Difference]: Finished difference Result 68860 states and 106266 transitions. [2022-12-14 04:43:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-12-14 04:43:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:08,557 INFO L225 Difference]: With dead ends: 68860 [2022-12-14 04:43:08,557 INFO L226 Difference]: Without dead ends: 46327 [2022-12-14 04:43:08,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:08,603 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3527 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:08,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:43:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2022-12-14 04:43:09,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 46195. [2022-12-14 04:43:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 39659 states have (on average 1.5187221059532514) internal successors, (60231), 39790 states have internal predecessors, (60231), 4998 states have call successors, (4998), 1537 states have call predecessors, (4998), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2022-12-14 04:43:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 70225 transitions. [2022-12-14 04:43:09,734 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 70225 transitions. Word has length 144 [2022-12-14 04:43:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 70225 transitions. [2022-12-14 04:43:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 04:43:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 70225 transitions. [2022-12-14 04:43:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 04:43:09,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:09,775 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:09,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 04:43:09,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 04:43:09,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1335052067, now seen corresponding path program 1 times [2022-12-14 04:43:09,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:09,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777198796] [2022-12-14 04:43:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 04:43:10,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:10,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777198796] [2022-12-14 04:43:10,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777198796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:10,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:43:10,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:43:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567201396] [2022-12-14 04:43:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 04:43:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:10,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 04:43:10,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:43:10,503 INFO L87 Difference]: Start difference. First operand 46195 states and 70225 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 04:43:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:14,563 INFO L93 Difference]: Finished difference Result 158075 states and 238040 transitions. [2022-12-14 04:43:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:43:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2022-12-14 04:43:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:14,883 INFO L225 Difference]: With dead ends: 158075 [2022-12-14 04:43:14,884 INFO L226 Difference]: Without dead ends: 113527 [2022-12-14 04:43:14,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:43:14,958 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 4428 mSDsluCounter, 9823 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 13165 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:14,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 13165 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:43:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113527 states. [2022-12-14 04:43:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113527 to 89203. [2022-12-14 04:43:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89203 states, 76395 states have (on average 1.5038549643301262) internal successors, (114887), 76654 states have internal predecessors, (114887), 9734 states have call successors, (9734), 3073 states have call predecessors, (9734), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2022-12-14 04:43:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 134353 transitions. [2022-12-14 04:43:18,193 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 134353 transitions. Word has length 144 [2022-12-14 04:43:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:18,194 INFO L495 AbstractCegarLoop]: Abstraction has 89203 states and 134353 transitions. [2022-12-14 04:43:18,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 04:43:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 134353 transitions. [2022-12-14 04:43:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-14 04:43:18,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:18,294 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:18,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:43:18,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash -235899352, now seen corresponding path program 1 times [2022-12-14 04:43:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:18,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297791206] [2022-12-14 04:43:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 04:43:18,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:18,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297791206] [2022-12-14 04:43:18,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297791206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:18,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494043803] [2022-12-14 04:43:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:18,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:18,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:18,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:18,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 04:43:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:18,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 04:43:18,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494043803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:18,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:18,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 04:43:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030336176] [2022-12-14 04:43:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:18,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:18,738 INFO L87 Difference]: Start difference. First operand 89203 states and 134353 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 04:43:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:21,991 INFO L93 Difference]: Finished difference Result 157175 states and 240212 transitions. [2022-12-14 04:43:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 167 [2022-12-14 04:43:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:22,301 INFO L225 Difference]: With dead ends: 157175 [2022-12-14 04:43:22,302 INFO L226 Difference]: Without dead ends: 112371 [2022-12-14 04:43:22,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:22,378 INFO L413 NwaCegarLoop]: 3452 mSDtfsCounter, 134 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:22,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 6778 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:43:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112371 states. [2022-12-14 04:43:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112371 to 106227. [2022-12-14 04:43:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106227 states, 92907 states have (on average 1.5451903516419645) internal successors, (143559), 93166 states have internal predecessors, (143559), 9990 states have call successors, (9990), 3329 states have call predecessors, (9990), 3328 states have return successors, (9988), 9732 states have call predecessors, (9988), 9988 states have call successors, (9988) [2022-12-14 04:43:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106227 states to 106227 states and 163537 transitions. [2022-12-14 04:43:26,391 INFO L78 Accepts]: Start accepts. Automaton has 106227 states and 163537 transitions. Word has length 167 [2022-12-14 04:43:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:26,391 INFO L495 AbstractCegarLoop]: Abstraction has 106227 states and 163537 transitions. [2022-12-14 04:43:26,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 04:43:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 106227 states and 163537 transitions. [2022-12-14 04:43:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 04:43:26,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:26,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:26,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 04:43:26,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:43:26,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2146055979, now seen corresponding path program 1 times [2022-12-14 04:43:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:26,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261185114] [2022-12-14 04:43:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:43:27,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:27,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261185114] [2022-12-14 04:43:27,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261185114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:27,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403717062] [2022-12-14 04:43:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:27,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:27,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:27,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:27,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 04:43:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:27,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:27,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 04:43:27,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:27,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403717062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:27,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:27,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 04:43:27,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277907993] [2022-12-14 04:43:27,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:27,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:27,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:27,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:27,380 INFO L87 Difference]: Start difference. First operand 106227 states and 163537 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:43:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:34,208 INFO L93 Difference]: Finished difference Result 313852 states and 487642 transitions. [2022-12-14 04:43:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:34,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 04:43:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:34,810 INFO L225 Difference]: With dead ends: 313852 [2022-12-14 04:43:34,810 INFO L226 Difference]: Without dead ends: 209271 [2022-12-14 04:43:35,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:35,001 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:35,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:43:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209271 states. [2022-12-14 04:43:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209271 to 208499. [2022-12-14 04:43:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208499 states, 182379 states have (on average 1.5367065287121873) internal successors, (280263), 182894 states have internal predecessors, (280263), 19462 states have call successors, (19462), 6657 states have call predecessors, (19462), 6656 states have return successors, (19460), 18948 states have call predecessors, (19460), 19460 states have call successors, (19460) [2022-12-14 04:43:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208499 states to 208499 states and 319185 transitions. [2022-12-14 04:43:42,370 INFO L78 Accepts]: Start accepts. Automaton has 208499 states and 319185 transitions. Word has length 220 [2022-12-14 04:43:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:42,370 INFO L495 AbstractCegarLoop]: Abstraction has 208499 states and 319185 transitions. [2022-12-14 04:43:42,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:43:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 208499 states and 319185 transitions. [2022-12-14 04:43:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 04:43:42,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:42,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:42,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 04:43:42,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:42,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:42,870 INFO L85 PathProgramCache]: Analyzing trace with hash -865439350, now seen corresponding path program 1 times [2022-12-14 04:43:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172609300] [2022-12-14 04:43:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:42,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:43:43,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172609300] [2022-12-14 04:43:43,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172609300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251396060] [2022-12-14 04:43:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:43,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:43,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:43,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:43,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 04:43:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:43,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:43:43,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 04:43:43,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:43:43,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251396060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:43:43,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:43:43,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 04:43:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202276066] [2022-12-14 04:43:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:43:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:43:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:43:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:43,506 INFO L87 Difference]: Start difference. First operand 208499 states and 319185 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:43:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:56,100 INFO L93 Difference]: Finished difference Result 619132 states and 957658 transitions. [2022-12-14 04:43:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:43:56,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 04:43:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:57,433 INFO L225 Difference]: With dead ends: 619132 [2022-12-14 04:43:57,433 INFO L226 Difference]: Without dead ends: 412279 [2022-12-14 04:43:57,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:43:57,783 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:57,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:43:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412279 states. [2022-12-14 04:44:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412279 to 410739. [2022-12-14 04:44:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410739 states, 359531 states have (on average 1.530012711004058) internal successors, (550087), 360558 states have internal predecessors, (550087), 37894 states have call successors, (37894), 13313 states have call predecessors, (37894), 13312 states have return successors, (37892), 36868 states have call predecessors, (37892), 37892 states have call successors, (37892) [2022-12-14 04:44:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410739 states to 410739 states and 625873 transitions. [2022-12-14 04:44:12,457 INFO L78 Accepts]: Start accepts. Automaton has 410739 states and 625873 transitions. Word has length 220 [2022-12-14 04:44:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:12,458 INFO L495 AbstractCegarLoop]: Abstraction has 410739 states and 625873 transitions. [2022-12-14 04:44:12,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:44:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 410739 states and 625873 transitions. [2022-12-14 04:44:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 04:44:13,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:13,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:13,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 04:44:13,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 04:44:13,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:44:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -171251593, now seen corresponding path program 1 times [2022-12-14 04:44:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:44:13,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918321150] [2022-12-14 04:44:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:44:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:44:13,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:44:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918321150] [2022-12-14 04:44:13,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918321150] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:44:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291014463] [2022-12-14 04:44:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:13,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:44:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:13,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:44:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 04:44:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:13,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:44:13,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 04:44:13,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:13,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291014463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:13,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:44:13,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 04:44:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898730760] [2022-12-14 04:44:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:44:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:44:13,994 INFO L87 Difference]: Start difference. First operand 410739 states and 625873 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:44:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:38,993 INFO L93 Difference]: Finished difference Result 1222780 states and 1883354 transitions. [2022-12-14 04:44:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 04:44:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:41,680 INFO L225 Difference]: With dead ends: 1222780 [2022-12-14 04:44:41,680 INFO L226 Difference]: Without dead ends: 813687 [2022-12-14 04:44:42,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:44:42,606 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:42,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:44:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813687 states. [2022-12-14 04:45:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813687 to 810611. [2022-12-14 04:45:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810611 states, 710251 states have (on average 1.5242034154122979) internal successors, (1082567), 712302 states have internal predecessors, (1082567), 73734 states have call successors, (73734), 26625 states have call predecessors, (73734), 26624 states have return successors, (73732), 71684 states have call predecessors, (73732), 73732 states have call successors, (73732) [2022-12-14 04:45:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810611 states to 810611 states and 1230033 transitions. [2022-12-14 04:45:12,593 INFO L78 Accepts]: Start accepts. Automaton has 810611 states and 1230033 transitions. Word has length 220 [2022-12-14 04:45:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:12,593 INFO L495 AbstractCegarLoop]: Abstraction has 810611 states and 1230033 transitions. [2022-12-14 04:45:12,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:45:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 810611 states and 1230033 transitions. [2022-12-14 04:45:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 04:45:14,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:14,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:14,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 04:45:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:14,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:45:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -736406002, now seen corresponding path program 1 times [2022-12-14 04:45:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:14,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120252267] [2022-12-14 04:45:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:45:14,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:14,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120252267] [2022-12-14 04:45:14,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120252267] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:45:14,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515395464] [2022-12-14 04:45:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:45:14,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:45:14,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e45945-40ca-4e97-b8e3-eb5eaa9d7364/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 04:45:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:15,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:45:15,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 04:45:15,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:45:15,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515395464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:15,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:45:15,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 04:45:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296226700] [2022-12-14 04:45:15,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:15,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:45:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:45:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:15,318 INFO L87 Difference]: Start difference. First operand 810611 states and 1230033 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 04:46:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:06,968 INFO L93 Difference]: Finished difference Result 2416252 states and 3706074 transitions. [2022-12-14 04:46:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:46:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 04:46:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:12,746 INFO L225 Difference]: With dead ends: 2416252 [2022-12-14 04:46:12,746 INFO L226 Difference]: Without dead ends: 1607287 [2022-12-14 04:46:14,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:46:14,932 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:14,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3590 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:46:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607287 states.