./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --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_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/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_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/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_f66d64e8-be29-4f63-b2be-49254e975bb5/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- 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 10:53:46,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:53:46,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:53:46,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:53:46,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:53:46,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:53:46,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:53:46,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:53:46,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:53:46,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:53:46,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:53:46,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:53:46,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:53:46,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:53:46,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:53:46,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:53:46,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:53:46,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:53:46,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:53:46,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:53:46,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:53:46,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:53:46,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:53:46,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:53:46,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:53:46,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:53:46,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:53:46,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:53:46,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:53:46,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:53:46,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:53:46,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:53:46,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:53:46,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:53:46,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:53:46,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:53:46,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:53:46,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:53:46,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:53:46,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:53:46,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:53:46,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:53:46,614 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:53:46,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:53:46,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:53:46,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:53:46,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:53:46,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:53:46,615 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:53:46,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:53:46,616 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:53:46,617 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:53:46,617 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:53:46,617 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:53:46,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:53:46,617 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:53:46,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:53:46,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:53:46,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:53:46,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:53:46,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:53:46,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:53:46,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:53:46,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:53:46,620 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_f66d64e8-be29-4f63-b2be-49254e975bb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2022-12-14 10:53:46,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:53:46,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:53:46,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:53:46,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:53:46,811 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:53:46,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2022-12-14 10:53:49,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:53:49,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:53:49,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2022-12-14 10:53:49,631 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/f3900eec2/73c6899ddfa540bda839c1bbed7b1654/FLAGd5135226a [2022-12-14 10:53:49,941 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/f3900eec2/73c6899ddfa540bda839c1bbed7b1654 [2022-12-14 10:53:49,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:53:49,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:53:49,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:53:49,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:53:49,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:53:49,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:53:49" (1/1) ... [2022-12-14 10:53:49,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4ffc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:49, skipping insertion in model container [2022-12-14 10:53:49,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:53:49" (1/1) ... [2022-12-14 10:53:49,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:53:49,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:53:50,241 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2022-12-14 10:53:50,319 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:53:50,321 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2022-12-14 10:53:50,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:53:50,332 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:53:50,351 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2022-12-14 10:53:50,392 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:53:50,393 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2022-12-14 10:53:50,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:53:50,418 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:53:50,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50 WrapperNode [2022-12-14 10:53:50,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:53:50,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:53:50,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:53:50,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:53:50,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,505 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 10:53:50,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:53:50,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:53:50,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:53:50,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:53:50,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:53:50,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:53:50,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:53:50,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:53:50,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (1/1) ... [2022-12-14 10:53:50,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:53:50,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:50,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:53:50,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:53:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:53:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:53:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:53:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:53:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:53:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 10:53:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:53:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:53:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:53:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:53:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:53:50,863 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:53:50,865 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:53:52,134 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:53:52,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:53:52,537 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 10:53:52,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:53:52 BoogieIcfgContainer [2022-12-14 10:53:52,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:53:52,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:53:52,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:53:52,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:53:52,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:53:49" (1/3) ... [2022-12-14 10:53:52,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461bd5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:53:52, skipping insertion in model container [2022-12-14 10:53:52,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:53:50" (2/3) ... [2022-12-14 10:53:52,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461bd5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:53:52, skipping insertion in model container [2022-12-14 10:53:52,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:53:52" (3/3) ... [2022-12-14 10:53:52,546 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2022-12-14 10:53:52,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:53:52,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:53:52,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:53:52,601 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;@76664a6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:53:52,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:53:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:53:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:53:52,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:52,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 10:53:52,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:53:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1932660624, now seen corresponding path program 1 times [2022-12-14 10:53:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:52,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497954459] [2022-12-14 10:53:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:52,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:52,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497954459] [2022-12-14 10:53:52,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 10:53:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430839581] [2022-12-14 10:53:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:52,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:52,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:52,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:53:52,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:53:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:52,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 10:53:52,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:52,909 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 10:53:52,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:53:52,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430839581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:52,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:52,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:53:52,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336324466] [2022-12-14 10:53:52,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:53:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:53:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:53:52,948 INFO L87 Difference]: Start difference. First operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:54,336 INFO L93 Difference]: Finished difference Result 301 states and 538 transitions. [2022-12-14 10:53:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:53:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 10:53:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:54,348 INFO L225 Difference]: With dead ends: 301 [2022-12-14 10:53:54,348 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 10:53:54,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:53:54,354 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:54,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:53:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 10:53:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 10:53:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:53:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-12-14 10:53:54,397 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-12-14 10:53:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:54,397 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-12-14 10:53:54,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-12-14 10:53:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:53:54,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:54,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:54,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:53:54,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 10:53:54,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:53:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash 366577228, now seen corresponding path program 1 times [2022-12-14 10:53:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:54,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187866929] [2022-12-14 10:53:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:54,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:54,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187866929] [2022-12-14 10:53:54,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 10:53:54,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882074041] [2022-12-14 10:53:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:54,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:53:54,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:53:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:54,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:53:54,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:54,862 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 10:53:54,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:53:54,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882074041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:53:54,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:53:54,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:53:54,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963205658] [2022-12-14 10:53:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:53:54,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:53:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:53:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:53:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:53:54,865 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:57,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 10:53:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:58,718 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-12-14 10:53:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:53:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 10:53:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:58,725 INFO L225 Difference]: With dead ends: 342 [2022-12-14 10:53:58,725 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 10:53:58,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:53:58,726 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 149 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:58,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 351 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-14 10:53:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 10:53:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-12-14 10:53:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 142 states have internal predecessors, (162), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:53:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-12-14 10:53:58,740 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-12-14 10:53:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:58,741 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-12-14 10:53:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:53:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-12-14 10:53:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 10:53:58,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:58,743 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] [2022-12-14 10:53:58,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:53:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:58,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:53:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1239149554, now seen corresponding path program 1 times [2022-12-14 10:53:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:58,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990419065] [2022-12-14 10:53:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:59,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:53:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77113815] [2022-12-14 10:53:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:59,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:59,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:59,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:53:59,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:54:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:00,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:54:00,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:00,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:00,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:00,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990419065] [2022-12-14 10:54:00,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:54:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77113815] [2022-12-14 10:54:00,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77113815] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:54:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317488434] [2022-12-14 10:54:00,228 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 10:54:00,228 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:54:00,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:54:00,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:54:00,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:54:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:00,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 10:54:00,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,376 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:54:00,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:54:00,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:54:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,450 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 10:54:00,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 10:54:00,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 10:54:00,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:54:00,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 10:54:00,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:54:00,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 10:54:00,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:00,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 10:54:00,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:01,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:01,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:01,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 10:54:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 10:54:01,414 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:54:14,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [317488434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:14,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:54:14,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-12-14 10:54:14,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350617162] [2022-12-14 10:54:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:14,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:54:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:54:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 10:54:14,381 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:16,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:54:18,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:54:20,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:54:22,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 10:54:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:23,908 INFO L93 Difference]: Finished difference Result 313 states and 382 transitions. [2022-12-14 10:54:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:54:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-14 10:54:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:23,910 INFO L225 Difference]: With dead ends: 313 [2022-12-14 10:54:23,910 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 10:54:23,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 10:54:23,911 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:23,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 402 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-12-14 10:54:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 10:54:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-12-14 10:54:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 146 states have (on average 1.178082191780822) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:54:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-12-14 10:54:23,927 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-12-14 10:54:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:23,927 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-12-14 10:54:23,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:54:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-12-14 10:54:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:54:23,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:23,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:23,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 10:54:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:24,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -786088463, now seen corresponding path program 1 times [2022-12-14 10:54:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329557557] [2022-12-14 10:54:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:24,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:54:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338883659] [2022-12-14 10:54:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:24,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:24,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:24,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:24,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:54:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:25,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:54:25,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:54:25,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:54:25,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:25,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329557557] [2022-12-14 10:54:25,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:54:25,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338883659] [2022-12-14 10:54:25,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338883659] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:54:25,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975818356] [2022-12-14 10:54:25,166 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 10:54:25,166 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:54:25,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:54:25,167 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:54:25,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:54:25,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,285 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:54:25,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:54:25,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 10:54:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,331 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 10:54:25,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 10:54:25,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,365 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 10:54:25,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 10:54:25,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:54:25,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 10:54:25,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:54:25,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:54:25,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:25,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:25,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 10:54:25,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 10:54:25,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:54:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:54:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:25,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:54:25,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:54:25,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:54:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,050 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 10:54:26,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 10:54:26,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,115 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 10:54:26,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 10:54:26,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:54:26,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:54:26,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 10:54:26,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 10:54:26,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:54:26,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:54:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 10:54:26,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 10:54:26,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:54:26,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:54:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,015 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 10:54:27,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 10:54:27,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,080 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 10:54:27,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 10:54:27,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:27,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 10:54:27,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:54:27,431 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 253 for LOIs [2022-12-14 10:54:27,522 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:54:33,507 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:54:40,700 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:54:50,161 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 262 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:55:02,513 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:55:17,400 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:55:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [975818356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:18,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:18,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-12-14 10:55:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064476977] [2022-12-14 10:55:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:55:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:55:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 10:55:18,148 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:20,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:22,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:24,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:26,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:28,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:31,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:33,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:35,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:37,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:46,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 10:55:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:47,001 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2022-12-14 10:55:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 10:55:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2022-12-14 10:55:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:47,003 INFO L225 Difference]: With dead ends: 315 [2022-12-14 10:55:47,003 INFO L226 Difference]: Without dead ends: 166 [2022-12-14 10:55:47,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 10:55:47,004 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:47,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 10 Unknown, 0 Unchecked, 28.8s Time] [2022-12-14 10:55:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-12-14 10:55:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-12-14 10:55:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 10:55:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-12-14 10:55:47,022 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-12-14 10:55:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:47,023 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-12-14 10:55:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-12-14 10:55:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 10:55:47,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:47,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:47,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:55:47,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:47,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash 27241029, now seen corresponding path program 1 times [2022-12-14 10:55:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977608159] [2022-12-14 10:55:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:47,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:47,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809274974] [2022-12-14 10:55:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:47,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:47,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:47,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:55:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:48,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:55:48,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 10:55:48,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 10:55:48,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977608159] [2022-12-14 10:55:48,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809274974] [2022-12-14 10:55:48,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809274974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1202278224] [2022-12-14 10:55:48,202 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 10:55:48,202 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:48,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:48,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:48,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,258 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:55:48,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:55:48,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 10:55:48,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,301 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 10:55:48,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 10:55:48,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,319 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:55:48,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:48,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:55:48,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 10:55:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,389 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 10:55:48,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 10:55:48,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:55:48,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 10:55:48,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 10:55:48,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 10:55:48,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:55:48,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:55:48,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:55:48,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 10:55:48,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:55:48,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 10:55:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,913 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 10:55:48,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 10:55:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:48,982 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 10:55:48,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 10:55:49,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 10:55:49,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:55:49,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:55:49,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:55:49,190 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-12-14 10:55:49,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-12-14 10:55:49,217 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:55:49,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-12-14 10:55:49,243 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:55:49,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-12-14 10:55:49,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:55:49,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 10:55:49,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 10:55:49,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 10:55:49,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 10:55:49,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 10:55:49,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:49,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 10:55:49,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 10:55:49,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 10:55:50,370 INFO L217 Elim1Store]: Index analysis took 629 ms [2022-12-14 10:55:54,320 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-12-14 10:55:54,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 10752723 treesize of output 10752742 [2022-12-14 10:55:55,121 INFO L217 Elim1Store]: Index analysis took 682 ms [2022-12-14 10:55:55,738 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-12-14 10:55:55,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10752718 treesize of output 10752722 [2022-12-14 10:56:11,385 INFO L217 Elim1Store]: Index analysis took 402 ms [2022-12-14 10:56:54,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:56:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:56:54,945 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:389) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 59 more [2022-12-14 10:56:54,954 INFO L158 Benchmark]: Toolchain (without parser) took 185009.29ms. Allocated memory was 184.5MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 152.3MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 6.8GB. Max. memory is 16.1GB. [2022-12-14 10:56:54,954 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:56:54,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.03ms. Allocated memory is still 184.5MB. Free memory was 152.3MB in the beginning and 114.8MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 10:56:54,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.00ms. Allocated memory is still 184.5MB. Free memory was 114.8MB in the beginning and 105.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 10:56:54,955 INFO L158 Benchmark]: Boogie Preprocessor took 105.34ms. Allocated memory is still 184.5MB. Free memory was 105.7MB in the beginning and 95.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:56:54,955 INFO L158 Benchmark]: RCFGBuilder took 1927.81ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 95.2MB in the beginning and 118.1MB in the end (delta: -22.9MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2022-12-14 10:56:54,956 INFO L158 Benchmark]: TraceAbstraction took 182410.74ms. Allocated memory was 222.3MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 117.1MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 6.7GB. Max. memory is 16.1GB. [2022-12-14 10:56:54,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.03ms. Allocated memory is still 184.5MB. Free memory was 152.3MB in the beginning and 114.8MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.00ms. Allocated memory is still 184.5MB. Free memory was 114.8MB in the beginning and 105.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.34ms. Allocated memory is still 184.5MB. Free memory was 105.7MB in the beginning and 95.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1927.81ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 95.2MB in the beginning and 118.1MB in the end (delta: -22.9MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * TraceAbstraction took 182410.74ms. Allocated memory was 222.3MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 117.1MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 6.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 10:56:55,165 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-14 10:56:55,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/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_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- 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 10:56:56,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:56:56,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:56:56,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:56:56,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:56:56,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:56:56,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:56:56,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:56:56,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:56:56,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:56:56,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:56:56,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:56:56,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:56:56,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:56:56,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:56:56,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:56:56,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:56:56,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:56:56,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:56:56,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:56:56,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:56:56,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:56:56,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:56:56,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:56:56,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:56:56,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:56:56,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:56:56,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:56:56,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:56:56,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:56:56,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:56:56,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:56:56,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:56:56,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:56:56,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:56:56,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:56:56,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:56:56,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:56:56,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:56:56,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:56:56,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:56:56,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 10:56:56,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:56:56,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:56:56,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:56:56,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:56:56,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:56:56,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:56:56,986 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:56:56,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:56:56,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:56:56,987 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:56:56,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:56:56,987 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:56:56,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:56:56,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:56:56,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:56:56,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:56:56,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:56:56,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:56:56,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:56:56,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:56:56,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:56:56,990 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:56:56,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:56:56,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:56:56,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:56:56,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:56:56,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:56:56,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:56:56,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:56:56,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:56:56,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:56:56,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:56:56,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:56:56,992 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:56:56,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:56:56,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:56:56,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:56:56,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:56:56,993 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f66d64e8-be29-4f63-b2be-49254e975bb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2022-12-14 10:56:57,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:56:57,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:56:57,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:56:57,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:56:57,248 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:56:57,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2022-12-14 10:56:59,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:57:00,115 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:57:00,115 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2022-12-14 10:57:00,129 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/b840b63a4/2d4c51d8867d480793a75530a280fbc1/FLAGadfd8c357 [2022-12-14 10:57:00,143 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/data/b840b63a4/2d4c51d8867d480793a75530a280fbc1 [2022-12-14 10:57:00,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:57:00,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:57:00,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:57:00,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:57:00,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:57:00,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9e1263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00, skipping insertion in model container [2022-12-14 10:57:00,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:57:00,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:57:00,563 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2022-12-14 10:57:00,685 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:57:00,687 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2022-12-14 10:57:00,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:57:00,701 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:57:00,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:57:00,722 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2022-12-14 10:57:00,771 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:57:00,772 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2022-12-14 10:57:00,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:57:00,778 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:57:00,797 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2022-12-14 10:57:00,842 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:57:00,844 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_f66d64e8-be29-4f63-b2be-49254e975bb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2022-12-14 10:57:00,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:57:00,867 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:57:00,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00 WrapperNode [2022-12-14 10:57:00,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:57:00,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:57:00,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:57:00,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:57:00,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,935 INFO L138 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 10:57:00,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:57:00,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:57:00,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:57:00,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:57:00,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:00,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:01,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:01,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:01,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:01,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:57:01,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:57:01,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:57:01,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:57:01,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (1/1) ... [2022-12-14 10:57:01,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:57:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:01,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:57:01,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:57:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 10:57:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:57:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:57:01,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:57:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:57:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:57:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:57:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:57:01,253 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:57:01,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:57:10,973 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:57:10,979 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:57:10,979 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 10:57:10,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:10 BoogieIcfgContainer [2022-12-14 10:57:10,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:57:10,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:57:10,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:57:10,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:57:10,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:57:00" (1/3) ... [2022-12-14 10:57:10,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3b749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:57:10, skipping insertion in model container [2022-12-14 10:57:10,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:00" (2/3) ... [2022-12-14 10:57:10,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3b749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:57:10, skipping insertion in model container [2022-12-14 10:57:10,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:10" (3/3) ... [2022-12-14 10:57:10,987 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2022-12-14 10:57:11,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:57:11,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:57:11,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:57:11,040 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;@7abec836, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:57:11,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:57:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:57:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:57:11,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:11,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:11,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-12-14 10:57:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:11,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075122349] [2022-12-14 10:57:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:11,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:11,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:57:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:11,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 10:57:11,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:11,230 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 10:57:11,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:11,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:11,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075122349] [2022-12-14 10:57:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075122349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:11,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:11,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:57:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517923105] [2022-12-14 10:57:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:11,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:57:11,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:57:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:57:11,259 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:11,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:11,296 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-12-14 10:57:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:57:11,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:57:11,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:11,305 INFO L225 Difference]: With dead ends: 506 [2022-12-14 10:57:11,305 INFO L226 Difference]: Without dead ends: 250 [2022-12-14 10:57:11,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:57:11,310 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:11,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-12-14 10:57:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-12-14 10:57:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:57:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-12-14 10:57:11,358 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-12-14 10:57:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-12-14 10:57:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-12-14 10:57:11,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 10:57:11,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:11,361 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] [2022-12-14 10:57:11,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:11,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:11,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:11,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-12-14 10:57:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:11,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253499511] [2022-12-14 10:57:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:11,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:11,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 10:57:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:57:11,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:11,745 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 10:57:11,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:11,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253499511] [2022-12-14 10:57:11,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253499511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:11,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:11,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:57:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308432387] [2022-12-14 10:57:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:11,747 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:11,983 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-12-14 10:57:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:11,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-14 10:57:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:11,990 INFO L225 Difference]: With dead ends: 565 [2022-12-14 10:57:11,990 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 10:57:11,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:11,992 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:11,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:57:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 10:57:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-12-14 10:57:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:57:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-12-14 10:57:12,015 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-12-14 10:57:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:12,015 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-12-14 10:57:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-12-14 10:57:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:57:12,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:12,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:12,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 10:57:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:12,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-12-14 10:57:12,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:12,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942956924] [2022-12-14 10:57:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:12,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:12,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:12,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 10:57:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:14,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:14,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942956924] [2022-12-14 10:57:14,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942956924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:14,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:14,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:57:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719311718] [2022-12-14 10:57:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:14,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:14,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:14,041 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:14,137 INFO L93 Difference]: Finished difference Result 508 states and 673 transitions. [2022-12-14 10:57:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:57:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:14,139 INFO L225 Difference]: With dead ends: 508 [2022-12-14 10:57:14,139 INFO L226 Difference]: Without dead ends: 260 [2022-12-14 10:57:14,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:14,141 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 292 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:14,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 631 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-14 10:57:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-12-14 10:57:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 245 states have internal predecessors, (305), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:57:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2022-12-14 10:57:14,157 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 140 [2022-12-14 10:57:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:14,158 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2022-12-14 10:57:14,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2022-12-14 10:57:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 10:57:14,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:14,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:14,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 10:57:14,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:14,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1562910771, now seen corresponding path program 1 times [2022-12-14 10:57:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544041041] [2022-12-14 10:57:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:14,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:14,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:14,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 10:57:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:16,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:16,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:16,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:16,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:16,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544041041] [2022-12-14 10:57:16,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544041041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:16,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:16,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:57:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639047348] [2022-12-14 10:57:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:16,336 INFO L87 Difference]: Start difference. First operand 254 states and 327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:16,803 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2022-12-14 10:57:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 10:57:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:16,809 INFO L225 Difference]: With dead ends: 546 [2022-12-14 10:57:16,809 INFO L226 Difference]: Without dead ends: 295 [2022-12-14 10:57:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:16,810 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 623 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:57:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-12-14 10:57:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-12-14 10:57:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.25) internal successors, (350), 286 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 10:57:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2022-12-14 10:57:16,818 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 140 [2022-12-14 10:57:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:16,818 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2022-12-14 10:57:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2022-12-14 10:57:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 10:57:16,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:16,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:16,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:57:17,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:17,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1120622574, now seen corresponding path program 1 times [2022-12-14 10:57:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616491999] [2022-12-14 10:57:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:17,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:17,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:17,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:17,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 10:57:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:18,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:18,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:18,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:18,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616491999] [2022-12-14 10:57:18,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616491999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:18,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:18,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:57:18,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411352013] [2022-12-14 10:57:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:18,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:18,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:18,430 INFO L87 Difference]: Start difference. First operand 295 states and 372 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:57:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:18,486 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2022-12-14 10:57:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 155 [2022-12-14 10:57:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:18,488 INFO L225 Difference]: With dead ends: 549 [2022-12-14 10:57:18,489 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 10:57:18,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:18,490 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:18,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 10:57:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-12-14 10:57:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 282 states have (on average 1.25177304964539) internal successors, (353), 289 states have internal predecessors, (353), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 10:57:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-12-14 10:57:18,503 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 155 [2022-12-14 10:57:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:18,503 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-12-14 10:57:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:57:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-12-14 10:57:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 10:57:18,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:18,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:18,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:18,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash -852886192, now seen corresponding path program 1 times [2022-12-14 10:57:18,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:18,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678061552] [2022-12-14 10:57:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:18,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:18,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:18,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 10:57:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:20,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:20,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:57:20,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:57:20,133 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678061552] [2022-12-14 10:57:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678061552] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578460624] [2022-12-14 10:57:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:20,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:20,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 10:57:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:21,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:21,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:57:21,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:21,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578460624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:21,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:21,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 10:57:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141342982] [2022-12-14 10:57:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:21,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:21,452 INFO L87 Difference]: Start difference. First operand 298 states and 377 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:21,552 INFO L93 Difference]: Finished difference Result 573 states and 737 transitions. [2022-12-14 10:57:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 10:57:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:21,554 INFO L225 Difference]: With dead ends: 573 [2022-12-14 10:57:21,554 INFO L226 Difference]: Without dead ends: 319 [2022-12-14 10:57:21,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:21,555 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:21,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 585 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-14 10:57:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2022-12-14 10:57:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 309 states have internal predecessors, (373), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 10:57:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 397 transitions. [2022-12-14 10:57:21,565 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 397 transitions. Word has length 157 [2022-12-14 10:57:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:21,565 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 397 transitions. [2022-12-14 10:57:21,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 397 transitions. [2022-12-14 10:57:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 10:57:21,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:21,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:21,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:21,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-12-14 10:57:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:21,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash 622348492, now seen corresponding path program 1 times [2022-12-14 10:57:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:21,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769057845] [2022-12-14 10:57:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:21,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:21,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:21,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 10:57:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:23,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:23,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:57:23,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:57:23,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769057845] [2022-12-14 10:57:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769057845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1387405123] [2022-12-14 10:57:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:23,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:23,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:23,425 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:23,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 10:57:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:24,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:24,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:57:25,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:25,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1387405123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:25,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:25,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 10:57:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938313116] [2022-12-14 10:57:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:25,233 INFO L87 Difference]: Start difference. First operand 318 states and 397 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:26,201 INFO L93 Difference]: Finished difference Result 826 states and 1048 transitions. [2022-12-14 10:57:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 10:57:26,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:26,203 INFO L225 Difference]: With dead ends: 826 [2022-12-14 10:57:26,203 INFO L226 Difference]: Without dead ends: 552 [2022-12-14 10:57:26,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:26,204 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 227 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:26,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:57:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-12-14 10:57:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-12-14 10:57:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 537 states have internal predecessors, (652), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2022-12-14 10:57:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 696 transitions. [2022-12-14 10:57:26,220 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 696 transitions. Word has length 157 [2022-12-14 10:57:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:26,220 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 696 transitions. [2022-12-14 10:57:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 696 transitions. [2022-12-14 10:57:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 10:57:26,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:26,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:26,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 10:57:26,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 10:57:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:26,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1130175954, now seen corresponding path program 1 times [2022-12-14 10:57:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:26,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43816432] [2022-12-14 10:57:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:26,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:26,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:26,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 10:57:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:28,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:28,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:57:28,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:57:28,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43816432] [2022-12-14 10:57:28,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43816432] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655417881] [2022-12-14 10:57:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:28,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 10:57:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:29,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:29,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:57:30,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:30,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1655417881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:30,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:30,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 10:57:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235506870] [2022-12-14 10:57:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:30,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:30,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:30,101 INFO L87 Difference]: Start difference. First operand 550 states and 696 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:30,677 INFO L93 Difference]: Finished difference Result 953 states and 1209 transitions. [2022-12-14 10:57:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2022-12-14 10:57:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:30,684 INFO L225 Difference]: With dead ends: 953 [2022-12-14 10:57:30,684 INFO L226 Difference]: Without dead ends: 688 [2022-12-14 10:57:30,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:57:30,685 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:30,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:57:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-12-14 10:57:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 686. [2022-12-14 10:57:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 658 states have (on average 1.2446808510638299) internal successors, (819), 670 states have internal predecessors, (819), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 10:57:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 870 transitions. [2022-12-14 10:57:30,719 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 870 transitions. Word has length 164 [2022-12-14 10:57:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:30,720 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 870 transitions. [2022-12-14 10:57:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:57:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 870 transitions. [2022-12-14 10:57:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 10:57:30,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:30,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:30,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 10:57:30,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 10:57:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:31,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:31,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1194831576, now seen corresponding path program 1 times [2022-12-14 10:57:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:31,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663665509] [2022-12-14 10:57:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:31,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:31,132 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:31,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 10:57:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:32,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:32,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:32,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:32,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663665509] [2022-12-14 10:57:32,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663665509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:32,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1049576383] [2022-12-14 10:57:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:32,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:32,370 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:32,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 10:57:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:33,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:33,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 10:57:33,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:33,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1049576383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:33,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:33,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 10:57:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464265244] [2022-12-14 10:57:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:57:33,703 INFO L87 Difference]: Start difference. First operand 686 states and 870 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:33,807 INFO L93 Difference]: Finished difference Result 883 states and 1148 transitions. [2022-12-14 10:57:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 10:57:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:33,809 INFO L225 Difference]: With dead ends: 883 [2022-12-14 10:57:33,809 INFO L226 Difference]: Without dead ends: 720 [2022-12-14 10:57:33,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:57:33,810 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:33,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-14 10:57:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 713. [2022-12-14 10:57:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.2131386861313869) internal successors, (831), 697 states have internal predecessors, (831), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 10:57:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 882 transitions. [2022-12-14 10:57:33,828 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 882 transitions. Word has length 174 [2022-12-14 10:57:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:33,828 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 882 transitions. [2022-12-14 10:57:33,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 882 transitions. [2022-12-14 10:57:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 10:57:33,830 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:33,830 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:33,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-12-14 10:57:34,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 10:57:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:34,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:34,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1105991014, now seen corresponding path program 1 times [2022-12-14 10:57:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448247815] [2022-12-14 10:57:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:34,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:34,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:34,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:34,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 10:57:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:35,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:35,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:35,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:35,535 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448247815] [2022-12-14 10:57:35,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448247815] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952250338] [2022-12-14 10:57:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:35,535 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:35,536 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:35,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-12-14 10:57:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:37,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:37,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 10:57:37,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:37,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1952250338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:37,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:37,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 10:57:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252198215] [2022-12-14 10:57:37,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:37,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:57:37,071 INFO L87 Difference]: Start difference. First operand 713 states and 882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:57:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:37,154 INFO L93 Difference]: Finished difference Result 1288 states and 1608 transitions. [2022-12-14 10:57:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-12-14 10:57:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:37,156 INFO L225 Difference]: With dead ends: 1288 [2022-12-14 10:57:37,156 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 10:57:37,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:57:37,157 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 276 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:37,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 10:57:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2022-12-14 10:57:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.1782334384858044) internal successors, (747), 646 states have internal predecessors, (747), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 10:57:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 798 transitions. [2022-12-14 10:57:37,176 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 798 transitions. Word has length 174 [2022-12-14 10:57:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:37,176 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 798 transitions. [2022-12-14 10:57:37,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:57:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 798 transitions. [2022-12-14 10:57:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 10:57:37,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:37,177 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:37,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-12-14 10:57:37,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 10:57:37,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:37,579 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1358232908, now seen corresponding path program 1 times [2022-12-14 10:57:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:37,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422201906] [2022-12-14 10:57:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:37,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:37,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:37,582 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:37,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 10:57:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:38,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:38,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:38,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:38,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:38,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422201906] [2022-12-14 10:57:38,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422201906] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:38,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1279950187] [2022-12-14 10:57:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:38,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:38,993 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 10:57:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:41,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:57:41,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 10:57:41,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1279950187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:41,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 10:57:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542413918] [2022-12-14 10:57:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:57:41,309 INFO L87 Difference]: Start difference. First operand 662 states and 798 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:43,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:57:47,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:57:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:51,373 INFO L93 Difference]: Finished difference Result 1448 states and 1752 transitions. [2022-12-14 10:57:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 10:57:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:51,378 INFO L225 Difference]: With dead ends: 1448 [2022-12-14 10:57:51,378 INFO L226 Difference]: Without dead ends: 912 [2022-12-14 10:57:51,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:57:51,379 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 512 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:51,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 609 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2022-12-14 10:57:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-12-14 10:57:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 551. [2022-12-14 10:57:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 528 states have (on average 1.1742424242424243) internal successors, (620), 535 states have internal predecessors, (620), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 10:57:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 661 transitions. [2022-12-14 10:57:51,404 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 661 transitions. Word has length 174 [2022-12-14 10:57:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:51,404 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 661 transitions. [2022-12-14 10:57:51,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 661 transitions. [2022-12-14 10:57:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 10:57:51,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:51,405 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:51,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 10:57:51,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 10:57:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:51,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1943774894, now seen corresponding path program 1 times [2022-12-14 10:57:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:51,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605652382] [2022-12-14 10:57:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:51,808 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:51,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 10:57:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:53,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:53,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:53,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605652382] [2022-12-14 10:57:53,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605652382] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [324003852] [2022-12-14 10:57:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:53,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:53,209 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:53,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 10:57:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:54,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:54,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 10:57:54,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:54,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [324003852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:54,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:57:54,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 10:57:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743696926] [2022-12-14 10:57:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:57:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:57:54,817 INFO L87 Difference]: Start difference. First operand 551 states and 661 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:54,896 INFO L93 Difference]: Finished difference Result 629 states and 761 transitions. [2022-12-14 10:57:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2022-12-14 10:57:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:54,898 INFO L225 Difference]: With dead ends: 629 [2022-12-14 10:57:54,898 INFO L226 Difference]: Without dead ends: 543 [2022-12-14 10:57:54,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:57:54,899 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 79 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:54,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 766 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-14 10:57:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-12-14 10:57:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 516 states have (on average 1.1647286821705427) internal successors, (601), 523 states have internal predecessors, (601), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 10:57:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 642 transitions. [2022-12-14 10:57:54,918 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 642 transitions. Word has length 181 [2022-12-14 10:57:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:54,918 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 642 transitions. [2022-12-14 10:57:54,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 10:57:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 642 transitions. [2022-12-14 10:57:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 10:57:54,919 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:54,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:54,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 10:57:55,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 10:57:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:55,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,323 INFO L85 PathProgramCache]: Analyzing trace with hash -34971296, now seen corresponding path program 1 times [2022-12-14 10:57:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:57:55,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269754242] [2022-12-14 10:57:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:57:55,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:57:55,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:57:55,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 10:57:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:56,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:56,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:56,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:56,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:57:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269754242] [2022-12-14 10:57:56,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269754242] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2018356398] [2022-12-14 10:57:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:57:56,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:57:56,989 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:57:56,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 10:57:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:59,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:59,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:57:59,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 10:57:59,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2018356398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165219788] [2022-12-14 10:57:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:59,230 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:59,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 10:58:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:00,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:58:00,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 10:58:00,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 10:58:01,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165219788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:01,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:58:01,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-12-14 10:58:01,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358968700] [2022-12-14 10:58:01,075 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:58:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:58:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:58:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:58:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:58:01,078 INFO L87 Difference]: Start difference. First operand 539 states and 642 transitions. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 10:58:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:02,201 INFO L93 Difference]: Finished difference Result 1835 states and 2262 transitions. [2022-12-14 10:58:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:58:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 181 [2022-12-14 10:58:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:02,205 INFO L225 Difference]: With dead ends: 1835 [2022-12-14 10:58:02,205 INFO L226 Difference]: Without dead ends: 1343 [2022-12-14 10:58:02,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-12-14 10:58:02,207 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1313 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:02,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 2274 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:58:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-12-14 10:58:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1205. [2022-12-14 10:58:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1160 states have (on average 1.1741379310344828) internal successors, (1362), 1167 states have internal predecessors, (1362), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 10:58:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1454 transitions. [2022-12-14 10:58:02,255 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1454 transitions. Word has length 181 [2022-12-14 10:58:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:02,256 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1454 transitions. [2022-12-14 10:58:02,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 10:58:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1454 transitions. [2022-12-14 10:58:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-12-14 10:58:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:02,259 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:02,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 10:58:02,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 10:58:02,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 10:58:02,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:58:02,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:58:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -708936254, now seen corresponding path program 1 times [2022-12-14 10:58:02,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:58:02,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916774538] [2022-12-14 10:58:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:58:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:58:02,868 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:58:02,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 10:58:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:11,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:58:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 10:58:11,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 10:58:12,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:58:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916774538] [2022-12-14 10:58:12,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916774538] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588722380] [2022-12-14 10:58:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:12,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:58:12,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:58:12,081 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:58:12,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 10:58:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:21,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:58:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 10:58:21,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 10:58:21,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1588722380] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:21,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479856436] [2022-12-14 10:58:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:21,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:21,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:21,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:58:21,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 10:58:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:29,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:58:29,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-12-14 10:58:29,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 10:58:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479856436] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:30,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:58:30,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-12-14 10:58:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448345924] [2022-12-14 10:58:30,024 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:58:30,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 10:58:30,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:58:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 10:58:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:58:30,027 INFO L87 Difference]: Start difference. First operand 1205 states and 1454 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 10:58:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:31,261 INFO L93 Difference]: Finished difference Result 2389 states and 3017 transitions. [2022-12-14 10:58:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 10:58:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 483 [2022-12-14 10:58:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:31,264 INFO L225 Difference]: With dead ends: 2389 [2022-12-14 10:58:31,264 INFO L226 Difference]: Without dead ends: 1225 [2022-12-14 10:58:31,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 10:58:31,266 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 40 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:31,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2548 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:58:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-12-14 10:58:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2022-12-14 10:58:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1172 states have (on average 1.1757679180887373) internal successors, (1378), 1179 states have internal predecessors, (1378), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 10:58:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1470 transitions. [2022-12-14 10:58:31,310 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1470 transitions. Word has length 483 [2022-12-14 10:58:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:31,310 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1470 transitions. [2022-12-14 10:58:31,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 10:58:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1470 transitions. [2022-12-14 10:58:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-12-14 10:58:31,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:31,314 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:31,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-14 10:58:31,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 10:58:31,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-12-14 10:58:31,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:58:31,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:58:31,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:31,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1754575422, now seen corresponding path program 2 times [2022-12-14 10:58:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:58:31,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122633577] [2022-12-14 10:58:31,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:58:31,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:58:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:58:31,924 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:58:31,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 10:58:41,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:58:41,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:58:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:58:41,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 10:58:41,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 10:58:42,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:58:42,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122633577] [2022-12-14 10:58:42,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122633577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:42,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [980981559] [2022-12-14 10:58:42,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:58:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:58:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:58:42,324 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:58:42,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 10:58:54,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:58:54,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:58:54,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:58:54,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 10:58:54,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 10:58:54,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [980981559] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:54,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480131706] [2022-12-14 10:58:54,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:58:54,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:54,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:54,835 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:58:54,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 10:59:03,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:59:03,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:59:03,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:59:03,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:59:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 10:59:04,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:59:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 10:59:05,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480131706] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:59:05,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:59:05,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-12-14 10:59:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311918527] [2022-12-14 10:59:05,733 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:59:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 10:59:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:59:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 10:59:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:59:05,735 INFO L87 Difference]: Start difference. First operand 1217 states and 1470 transitions. Second operand has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 10:59:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:21,871 INFO L93 Difference]: Finished difference Result 4750 states and 6231 transitions. [2022-12-14 10:59:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 10:59:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 507 [2022-12-14 10:59:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:21,880 INFO L225 Difference]: With dead ends: 4750 [2022-12-14 10:59:21,880 INFO L226 Difference]: Without dead ends: 3576 [2022-12-14 10:59:21,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 10:59:21,883 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 4440 mSDsluCounter, 20591 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 21822 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:21,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 21822 Invalid, 6571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1448 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-12-14 10:59:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-12-14 10:59:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3218. [2022-12-14 10:59:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3113 states have (on average 1.1692900738837135) internal successors, (3640), 3120 states have internal predecessors, (3640), 99 states have call successors, (99), 3 states have call predecessors, (99), 4 states have return successors, (137), 95 states have call predecessors, (137), 99 states have call successors, (137) [2022-12-14 10:59:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3876 transitions. [2022-12-14 10:59:22,049 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3876 transitions. Word has length 507 [2022-12-14 10:59:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:22,049 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 3876 transitions. [2022-12-14 10:59:22,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 10:59:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3876 transitions. [2022-12-14 10:59:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-12-14 10:59:22,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:22,062 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:22,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-14 10:59:22,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-12-14 10:59:22,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 10:59:22,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:59:22,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1181150768, now seen corresponding path program 3 times [2022-12-14 10:59:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:59:22,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735712242] [2022-12-14 10:59:22,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:59:22,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:59:22,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:59:22,670 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:59:22,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66d64e8-be29-4f63-b2be-49254e975bb5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process